If it wasn't for the Stacy and Perry subplot, Happy Birthday Isabella would be one of my least favorite episodes of Season 4, because it completely wiped Isabella of any personality beyond "boys boys boys." That's my biggest criticism of Season 4 overall tbh - we lose out on a lot of Isabella's other personality traits in favor of her obsession with Phineas.

But Isabella is headstrong, and caring, and wonderful, and she would never blow off her friends the way she kept doing in that episode. The writers did her a disservice as the show went on, I think. Anyway.

Ft. The Friend Trio (my favorite trio, I need a cutesy nickname for them) and platonic Ferbella. This is also the closest you'll likely EVER get to me writing Phinabella for free lol, so enjoy it.


Isabella Garcia-Shapiro prided herself on three main things:

One, she was a good leader. She knew her team's strengths and weaknesses, knew how to get people out of a tricky situation, and had an absurd number of patches to back it up.

Two, she was a good daughter. She always helped her mom out where she could, setting up parties and festivals and running errands. Without her dad around, Isabella refused to let her mother deal with everything on her own.

And three, she had an impeccable sleep schedule. Always to bed by 10 pm, always awake and ready for the day by 7. It was only ever broken by late night events, and even then, she still got her recommended 8 hours, every single night.

So when she rolled over in bed for the twelfth time that night, only to find her clock practically shouting at her that it was almost two in the morning, she was frustrated. She was beyond frustrated. She wasn't going to be on time for the activity in the morning, wasn't going to be able to help her mother run errands that afternoon, wasn't going to be fit to lead her troop meeting that night.

Pinky was sound asleep at the foot of her bed when she finally climbed out, deep rumbles shaking his body more than usual, and Isabella sighed and gave him a pat on the head as she trudged by him. He cracked one eye open and whined.

"Just going for some water, buddy," she whispered, scratching behind his ear.

Pinky huffed and curled back up, eyes lowering but not closing fully as she left the room. Isabella smiled to herself; he might not do much, but he was always good about looking out for her.

She pattered down the stairs and into the kitchen, clicking on the small counter light in favor of the overhead and pouring herself a tall glass of water. The faucet squeaked angrily as she shut it off, and then she took her glass and sank into one of the barstools at the counter. For a moment, she just watched as the condensation from her glass trickled down the outside of the cup and pooled on the tile.

Isabella took a long drink, hoping it would clear her head enough to go back to bed, and then let her eyes drift across the room to the sliding door, to the backyard. Even from here, she could still see some of the confetti left over from her birthday celebration, and she gave a faint smile as Buford's words came back to her.

"Yeah, it's every girl's wish to have her backyard covered in litter."

Her smile faded slowly and she turned her gaze back to her cup, eyebrows furrowing and fingers drumming on the glass. Something like guilt swirled in her gut.

"This must be your best birthday ever!"

"What a grand and glorious gift!"

"I've never seen anything like it!"

Her stomach twisted and she took another sip, fingers suddenly clammy. Her friend's voices, their best wishes, their excitement over giving her their gifts and making her day special, rang through her head.

"I just remembered there's something I need to do. You two go."

Isabella buried her head in her hands and groaned.

She had the most incredible friends. She had literally the best friends in the entire universe, friends who were willing to spend their whole day celebrating her, going on with some crazy scheme to make sure that she had the best day ever, they were willing to give up their time with her to let her have her biggest wish, and she…

She hadn't even thanked them. Not really. Not in a way that mattered.

She'd been dismissive of them all day, been annoyed by attention from anyone who wasn't Phineas, and she…she wasn't like that. Isabella had never been like that; she loved her friends, loved them desperately. What was wrong with her that she'd brush them all off like that, even for Phineas?

The worst part was, she knew they didn't care. The girls were used to it. Baljeet and Buford probably didn't even notice her dismissiveness, given that was just their overall friendship dynamic with each other. And Ferb…Ferb was already her confidant for most things Phineas. He would've expected it, it was likely why he pushed them together at the end of the party and left them alone.

But Isabella cared.

She groaned again and buried her head in her arms on the counter, feeling a wave of shame come over her. What kind of friend was she, that she couldn't even be grateful to her friends for throwing her the coolest party ever? When she was so blindsided by a boy that she couldn't even enjoy the festivities?

Isabella sat up straight again and chugged the rest of her water, swiping at her mouth and putting the glass in the sink when she was done. With the source of her inability to sleep located, she was already feeling more tired, and now she headed back for the stairs with new determination and another thing to add to her list of things she prided herself on:

Isabella really, really cared about her friends. And she was going to make sure they knew it.


When she popped into the backyard the next morning, it took everything in her not to spill out her usual, "Hey Phineas, Whatcha doin?" line. Instead, she took a moment to study the scene in front of her.

Phineas was on his hands and knees, scribbling at something on a blueprint with a pencil. Ferb was standing over him, one hand resting on his chin as he nodded. Buford and Baljeet weren't there yet, as far as Isabella could tell, and she breathed out a little. It was easier, with just the brothers. "Hey guys," she said, pushing fully into the yard. "Whatcha doin?"

Phineas looked up at her with a grin, and she pushed down her butterflies. "Hey Isabella! We're just mapping out our plans for the world's largest electronic keyboard. Wanna help? We're gonna set up a whole band on top!"

Isabella tilted her head. "If it's giant, how do we play it?"

"By making giant mechanical hands to go with it, obviously."

That was, by all accounts, a solid answer. Isabella smiled. "Um. How long do you think it'll be?"

Phineas gave a shrug, glancing at Ferb, who tapped at his watch in a way that Isabella didn't understand, but Phineas clearly did. "Probably done by no later than 11. And with how things usually go, it should be cleared out by midday. Do you have a Fireside Girl meeting later or something? We can always work around it."

Isabella's eyes shot to Ferb before she could help herself. She'd already planned out what she wanted to do for the Fireside Girls later that night, and even what she planned to say later on to Baljeet and Buford, if she got them alone. But Ferb…Ferb had actually given her the gift she wanted yesterday. And she didn't think a fist bump had said everything she needed it to. "Yeah, or something."

Ferb's eyebrows creased just a little and Isabella looked away, clasping her hands behind her back. "Okay!" she said cheerily, just as Baljeet and Buford walked into the yard and gave the group waves. "Are we adding sound effects to this keyboard or what?"

Phineas' eyes lit up. "Oh, that's a great idea! Hey, we could add Perry's sound!" He paused, glancing around the yard, and then frowned. "Hey, where's Perry?"


"You guys um…you have a second?" Isabella asked, approaching Buford and Baljeet where they were in the process of trying to hammer in Middle C. She shuffled the extra dials and knobs that were in her arms, trekking up to the space above them to start putting them in.

Buford grunted from somewhere under the key, and Isabella glanced back to watch what they were doing. "If someone would push a little harder on this thing, we'd have been done by now."

Baljeet scoffed and stomped down on the key, resulting in a squeak from Buford, before turning to Isabella with a shockingly smug smile on his face. "Of course, Isabella. What do you need?"

Buford clambered out from under the key, scowling at Baljeet and nursing at his pointer finger, but he turned his attention to Isabella without protest. She glanced down the keyboard to find Phineas and Ferb still hard at work on the wiring system a few hundred feet down, then set down her dials and twisted her shirt in her fingers. "Um. I didn't thank you guys. For yesterday. You put a lot of hard work and effort into my birthday party, and I was kind of being selfish about-"

"You serious?" Buford interrupted, lifting an eyebrow.

Isabella froze, clasping her hands together. "W-What?"

Buford scoffed. "Aw, come on. We knew you were gonna be distracted all day, what with Dinnerbell over there."

"I-I don't-" Isabella squeaked, before giving up and pressing her hands to her face. "Ugh, was it that obvious?"

Baljeet's laugh was gentle, made her feel relaxed. "Maybe to everyone except for him. We seriously do not mind, Isabella. We know that you enjoyed yourself. You do not have to thank us. You would do the same for our birthdays."

"Better not," Buford grunted. "I ain't going in no bag."

Baljeet smacked at his shoulder, shuddering. "Not the contractions, Buford."

"Ain't, ain't, ain't."

"I detest you."

Isabella bit back her laugh. "You guys seriously aren't mad?" she asked, guilt still churning ever so slightly still in her stomach. "I felt so bad last night that I didn't really thank you, especially after all the work you two put in to make the party so good."

The two glanced over at her from their bickering, and Baljeet shot her a tiny smile. "We are not mad, we promise. I am glad you enjoyed it though. I wondered, what with you being shoved in a bag constantly."

"Hey, I was told to get rid of her. No one told me how!"

Isabella shook her head and grinned. "This is why I love you guys."

"Blech, enough sappiness," Buford grumbled, but Isabella could see the fondness in his eyes. "Give me the hammer, we're getting this C in if it kills me."

"You will not get the key in if you shatter it into pieces, Buford!"

"Watch me!"


"Huh," Phineas said, staring at the horizon in utter befuddlement. "That's a new one. Flying pigs."

"Were they wearing fedoras?" Ferb asked in confusion.

"I think one of them had a unicorn horn," Baljeet noted.

Isabella just shook her head. "There was definitely a purple one in the mix."

"How is this still somehow normal for us?" Buford managed.

"No idea," they chorused.

The group turned from the skyline slowly, back into the yard, and Phineas grinned. "Oh, there you are Perry!" he exclaimed, leaning down and scooping up the platypus into his arms. "You guys coming in for snacks?"

He directed the question at the three of them, and Isabella glanced to Buford and Baljeet first. Buford shook his head. "Nah, got a quilting meeting to get to. Thanks though. Later!"

He waved goodbye, exiting, and Baljeet shrugged. "I am also going to have to leave. I am tutoring my neighbor in advanced astrophysics. But have a snack for me!"

Phineas turned to Isabella as Baljeet left, giving her a smile that had her stomach in knots. "Looks like it's just the three of us!"

Her eyes, once again, shot to Ferb, who looked completely unphased by this turn of events. When he caught her looking again, though, his brows furrowed, much harder than they had that morning. Isabella swallowed; her throat was dry. "Um. Actually-"

"Oh yeah, you have a Fireside Girl meeting, right?" Phineas remembered. "Well have fun, tell the others hi from us!"

She clenched her fists. "A-Actually I…I wanted to ask if you'd come for ice cream with me."

Phineas blinked, and then turned to follow her gaze to Ferb, who looked stunned. He glanced to his brother, then back to Isabella, lips parting in surprise. "Me?" he managed, pointing at himself.

Isabella gave a grin. "Yeah! I-I mean, Phineas and I went yesterday, I thought it only fair that-"

"Dude, yeah! You guys have fun!" Phineas said in delight. "Me and Perry'll hang out until you get back."

He waved and practically bounced back to the house, leaving Ferb and Isabella alone in the yard. She turned to him fully and tilted her head to the gate. "Well, come on. Ice cream won't wait forever."

She got about two steps before his hand caught her wrist, and when she turned back, Ferb's brows were pushed together in bewilderment, his eyes searching her, uncertain. Something about the look made her heart twist – did she really…did she really not hang out with him one on one so much that he was confused by it?

Instead of speaking, she turned her hand so that it was clasping his and tugged him to the gate, giving him what she hoped was a reassuring smile. Some of the tension in his forehead eased and he fell into step alongside her. For several minutes they walked in a comfortable silence, until they reached the ice cream shop. Ferb pressed open the door for her, and she could feel his eyes on her back as he followed her inside.

She bounced up to the counter, smiling at the attendant behind it. "Two cones please," she said cheerfully. "One strawberry, one cherry."

When she turned back, cones in hand, and offered the cherry one to Ferb, he seemed startled. He took it slowly, eyes flickering to the ice cream and then back up to Isabella. She squirmed a little. "What? I know everyone's ice cream orders!"

The smile on his face was hesitant, and he tilted his head towards a booth against the wall. She joined him, licking at her cone, and slid into the seat opposite him. For a moment, they just sat and enjoyed their ice cream.

"What's this for?" Ferb finally asked, making Isabella jump. His voice was quiet, and he wasn't looking at her, though she could tell he wanted to, if the way his fingers were drumming at the table was any indication.

"I…" Isabella hesitated, lowering her cone and slumping her chin into her free hand. She eyed her cone and took another lick off the top. "I felt…awful last night. About how I treated you guys yesterday."

Ferb was looking at her now, his brows furrowed again. Isabella kept talking, because if she didn't, she'd get too nervous. "Everyone was so nice and kind on my birthday, and all I cared about was hanging out with Phineas. And then you were so nice about it, afterwards, and I didn't even actually thank you. What kind of friend does that?"

Ferb's hand settled gently on her arm and Isabella jolted, looking up at him. He reached to the side and pulled a napkin from the dispenser, handing it over for – oh shoot, her ice cream was melting down her hand. She took it and dabbed at the mess before continuing to eat it.

"You don't have to apologize," Ferb assured her. "We should have asked you first if you wanted something extravagant."

"But-"

"And you especially don't have to apologize for wanting to hang out with Phineas," he continued, licking his ice cream thoughtfully. "We get it. All of us."

There was a mischievous twinkle in his eye, and Isabella slumped in her seat. For once, the teasing didn't make her feel indignant or flustered; instead, she just felt worse. She took a bite from the top of the ice cream cone. "I know," she said finally, when she'd gone too long without saying anything. "But I…I care about you guys, you know? All of you. I don't want you to think-"

His hand was warm, on top of hers, and the glint in his eyes when she looked up was soft, this time. "We don't," he promised. "I don't. But thank you."

That acknowledgement, that assurance, made Isabella breathe a sigh of relief. She bit down into her cone, munching on it for a moment before speaking again. "So like…when you say all of us…?"

Ferb bit back on a smile and popped the entire rest of his cone in his mouth, cheeks puffing out as he chewed. Isabella squawked and flung a napkin at him, which he dodged with ease. "Ferb! You jerk!"

She still had to make it up to her girls later. But right now, Isabella felt content for the first time since she'd gone to bed last night.