Well, I definitely wasn't expecting a reception to that first little crossover experiment like the one I received (to be honest, I wasn't expecting at all!) So in accordance with a few requests, I've decided to upload the other little crossover experiment that I did this week when I was toying around with new ideas.

As always, I hope that all you folks enjoy! - SGA

"Heeeey, bro-bro! Heeeey Wen-Wen!" The young woman greeted as she let her twin and sister-in-law into her house. She then shoved her face right at the redheaded tyke in Wendy's arms and peppered both the baby's freckled cheeks with a kiss each. "And how's my little Fee-Fee doing?"

"Hey Mabel-" Dipper was nearly sent toppling over when his niece and nephew charged top-speed into his legs. After giving him a welcoming squeeze, they surrounded their aunt and bounced up and down impatiently as if they were made of rubber. As per routine, Wendy lowered Phoebe so she could get a hug from each of her over-adoring cousins.

"Sup, dudes?" The wiry redhead knelt down to make herself more level with the little twins

"Aunt Wenny! Aunt Wenny! Aunt Wenny! We're having PIZZA TONIGHT!" Finn and his sister were both fit to bursting with excitement, just like there were every Friday night.

"Pizza anna movie!" added Gladys.

"Awww yeah it is." The redhead tucked her daughter in one wiry arm to give her niece and nephew a fistbump each.

"So, are we all good to go?" Dipper asked as he removed his coat.

"Halfway there!" Replied his twin. "Got a movie picked out, and was just about to call in our order.

"I'll take care that, then. What do we want, one large cheese and one large pepperoni?" He offered.

"Hmmm….the usual's always pretty good….but maybe we should try spicing things up with something new!" Mabel suggested thoughtfully.

"Get some pizza, leave it here with the kids and we go and hit the bar?" Wendy joked before they took up a debate on dinner.

But they had barely started discussing whether they wanted to place mozzarella sticks or buffalo wings with their order when they were interrupted by a sudden barrage of furious knocking on the door. Everyone shared curious looks. After a puzzled pause, Mabel answered it.

"...Hello?" She peeked her head out. "Whoa!"

"Hiiii!" The blonder teen on the doorstep spread her arms wide and greeted everyone enthusiastically. It was none other than Star Butterfly herself, Princess and Future-Queen of the land of Mewni, current resident of a different-dimensional planet earth, and wielder of incredible magical power that was only growing stronger with each passing day.

She had also been the emergency babysitter for the last few months and counting. The peculiar arrangement that had been in place ever since she Marco had accidentally wound up in Gravity Falls over the most recent summer one day, and during that first fateful encounter she had immediately and strongly hit it off with Mabel. But more importantly, she had been totally and utterly smitten with the youngest generation of Pines.

"STAR!"

"STAH!"

Finn and Gladys whooped with delight at the familiar face and immediately threw themselves at her. The princess was more than happy to sweep the pair up into an enormous bear hug.

"My cuties!" She crooned ecstatically. "Oooh, and I can't forget about my littlest sweetie too-ooooo! Hey Wendy, just 'scuuuuuse me!"

With the utmost awkwardness she collected Phoebe into the group crush, and the baby redhead was more than happy to cuddle against their other-dimensional babysitter.

"Uh, hey Star." Wendy shot her husband and sister-in-law a puzzled glance.

"Is….is everything okay?" Dipper pried.

"What? Oh, of course it is! I'm just doin' my job!" The girl proudly announced with a perky smile.

"What job?"

"Caring for all my babes!" She matter-of-factly answered, then adoringly nuzzled the trio of tots in her hold.

"...What is happening right now?" Wendy asked out loud. Star finally noticed the adult's bemused expression.

"Ooooh! Wait, I didn't tell you about…..whoops! Hold on!" Star put down the kids, or at least tried to. It was only after a bit of effort, some reassurances and a few pats on the head was she able to get them all to actually let go of her. She then slipped outside, rooted around the front of the house and started tugging at a small half-buried stone. A few pulls later it popped up, revealing an underside that glowed with an intense psychedelic rainbow swirl.

"Whooooaaaaa." Mabel was immediately entranced by the sight.

"Okay…..and that's supposed to be…" Dipper asked.

"Just a little something I picked up at Quest Buy! Don't worry, I buried one near yours and Wendy's place too!"

"Wait, what?" The young man tried to pry, but was drowned out by her chatter.

"Don't worry, it's just a standard magical alert system! No need to pay me back. See, now when you need someone to look after the babies, this little beauty detects it, sends an alert my way, and BOOM! All I gotta do is a snip of clip dimensional scissors later and the Best Babysitter in the World is ready for action!" She explained, followed by a twirl and a sweep of her arms.

"Uh….oooohh!" Mabel blushed. "Wow. Star, that's…..really thoughtful of you, but-"

"I know, right? You don't even need to do a messaging spell anymore in case you guys gotta run out and handle some of your own crazy stuff! If you need me, I'll be there in a snap!" It took a few tries, but she was finally able to snap her fingers for emphasis. She then looked at the young mother's glowing red face and asked curiously, "What's wrong?"

"Um…...well, you see…." Mabel rubbed the back of her neck. This wasn't going to be easy to say, especially to such an eager soul. "It's nice that you popped all the way into our world like this, but-"

Wendy put a hand on her sister-in-law's shoulder, and with just one nod she motioned that she'd take it from here here. "Sorry. We're actually good here for tonight."

Star's face instantly fell. "Huh?"

"Yeah, we don't-"

"But the alert!" Star pointed to the underside of the enchanted stone. "I set it especially for when the babies need a-"

"Yeeeaaah, about that. I just did a stupid joke about us going out on the town and leaving the kids behind, and….uh, yeah. I was only kidding around, but I guess your like….babysitter-rock-whatever thought I was being serious."

"So…..you don't need…." The crestfallen teen pointed to herself.

"No, it was just me messing around." The lumberjill shrugged apologetically. "I'm sorry, that was all totally my bad."

"Oh…..ooohhhhh, okay." The girl's shoulders sagged. "Sorry about barging in like that. Looks like I set the sensitivity on the alert too high. I can try and fix that….um, next time, when you, uh….actually need me."

"Youah not stayin'?" Gladys chirped confusedly. Despite the smile she tried to slap on, there was no doubt that Star looked more disappointed than the kids by leaps and bounds as she knelt down.

"Sorry, sweetie. Your Star just dropped by because of an oopsie." She followed by a heavy sigh.

The scene couldn't possibly be any sadder. Dipper and Mabel silently looked to one another, and without uttering a single word they agreed that it was pretty obvious what had to be done now.

"Hey, just because we're not going out doesn't mean you can't stick around for the evening-" Mabel barely finished making her offer before the girl shot straight to her feet and clenched her fists.

"You mean it?" She asked with a tone dripping with hope.

"Yeah, of course! I mean it one million percent!" Mabel crossed her heart, then spread her sweeter-sleeved arms wide. "You're our friend! And that means you're always, always, always welcome here to-"

In an instant her mood had made a total turnaround. After hugging Mabel, she knelt down and beamed brightly at the kids.

"Okay, change of plans! Looks like we got ourselves a Starry night!" After she fired off a celebratory blast of color from her wand she greedily swept all the children back up into her all-encompassing hold.

"Yaaaay! Starry Night!" Finn cheered.

"Stah! Stah! Stah!" Gladys didn't waste any time now that one of their favorite playmates was officially staying over for a little while. "Can we play Space-Ninjas?"

"Can we? Ain't nobody gonna stop us from playing space ninjas!" She put them down and announced, "The Mecha-Queen of the Asteroid Narwhals is gonna get yoooooou! Activating Laser Horn!"

The twins squealed with laughter as they raced off into the living room and covered their retreat with imaginary throwing stars. Phoebe tried to toddle afterwards and fell flat on her belly. She was swept up by Star and propped up onto the teen's shoulders.

"Looks like you're my pilot, sweetie!" She announced with a grin before mechanically marching off after the others. "Time to engage our space-ninja trackers! Oooohhhh, watch out! I'm detecting high levels of awesome galactic ninja power nearby….."

"It looks like we got an extra guest for Pizza Night." Dipper laughed.

"Yeah we do!" Mabel was already busy snapping as many photos on her phone as she could before teen and kids vanished from sight.

"Sooooo, are we gonna have pay her the usual ten-fifty an hour before she leaves later, or what?" Wendy asked with a chuckle.

Dipper listened to the joyous ruckus filling his sister's little home and replied, "Maybe, but I'm not sure if that's gonna be necessary. Sounds like she's already got everything she wants out of tonight…."