I know that things between Lou/Tim were resolved a bit quickly but this is mainly because the story's main focus is on Amy and Ty. The situation was just to force Tim into seeing how he's been acting. And pushed the two into the same room with him being the only person to be there for her. That is the main reason for making Lou's pregnancy scare not too dramatic.

"Are you sure your okay? I can stay..." Amy said leaning over the couch watching Lou like a hawk.
Lou let out a chuckle. "I'm fine. Besides Lisa is already waiting on me hand and foot. I'm good." She patted her stomach.
"Okay...ready?" Tim asked Amy as he came into the room.
"Are you sure you can watch him today?" Lou said stretching her neck concerned as she watched her father pick Jackson out of the play pen in the dining room.
"Yes. Now relax. Amy will be there if I need anything. You just get some rest."
Lou sighed as she watched the two walk into the kitchen. "Bye." She waved sad. "Be careful. And watch him."
Amy smiled. "It'll be good. Besides if Jackson gets cranky it's like revenge for all these years." She laughed as she shifted her riding helmet. "It's for a few hours." She blew Lou a kiss as she raced after her dad and nephew.

"Look at her go." Tim shouted as he held Jackson who was sitting on the fence post as he watched Amy finish up.
"Yeah!" Jackson yelled as he giggled.
A small smile formed on his lips. It was a sweet moment he'd wished he got to share with him sooner. And it also made him realize what he missed out on with his son. Regrets were hard to let go. But he already felt better with his relationship with Lou now. He was actually excited about the idea of being a grandfather. And won't admit it but he had tears when the nurse showed the two of them the ultrasound to prove the baby was alright.
"Dad?" Amy said startling him out of his thoughts. "You ready?"
"Yeah. Just give me a minute to get this guy back in the stroller and I'll give you a hand with Storm." He moved to set Jackson down but he sketched and reached his arms out to Amy who stood on the other side of the fence holding Storm's reins. She couldn't help but chuckle.
"Seems he has other plans." She smiled handing the reins over to Tim and then grabbed her nephew off the fence.
"Seems that way." He laughed too as he hopped over the fence. "Lou seems to think he's more like me. I don't see it." He did his best to keep a straight face. Amy bit her lip trying not to laugh. Instead she smiled at Jackson before ducking under the fence rail to switch places with her dad. Grabbing the stroller she pushed it toward the truck as Tim instead went to the pens to untack Storm.

"He didn't?" Lou asked shocked from her seating position on Amy's bed.
"He did, Lou. He was a complete jerk. Shouting and yelling about me being his." Amy shock her head and glanced away.
Lou didn't know what to say. "Grandpa said he was drunk? That doesn't sound like him."
"I know but apparently it's the new him. I know he's been a bit...well unlike he was when he lived here years ago. You thought he was damaged then, you should see him now. The brooding bad boy type isn't really attractive."
"Amy, there has to be a reason that he changed so much. I talked to him the other day in the barn and he..." She trailed off remembering what he had said.
"What?" Amy asked noticing she had stopped. She was now looking at her suspicious.
"Uh, nothing. Just that he wasn't like that." She shrugged.
"What am I supposed to do?"
"I don't know, Amy. I guess if I were you I'd hear him out. Ask what's going on? It can't hurt."
"As if it's that easy..." Amy rolled her eyes and smirked at her sister.
"Okay, you're right. But to be honest I've always been more like dad. You know that. We are both stubborn."
"Stubborn alright." Amy laughed.
"Do you think I forgave him too easily? I mean he has been a royal jerk for years but...I just couldn't believe he stuck by me and Jackson. He could have ran the other way."
Amy nodded. "I think when push comes to shove and people have to think with their heart instead of their head it's easy to make the right decision." Lou nodded thinking. "You scared him, Lou. All of a sudden his anger over what happened disappeared. You were just his daughter in that moment who needed his help."
"He really was good with Jackson today?"
"Yes, he was." Amy smiled.
"He did really seem to like it."
"He really wants a second change and he's doing everything he can to show you he earns it." Amy said patting her knee. "There's nothing wrong with forgiving him and working toward a better relationship. It's not going to happen over night."
Amy and Lou hugged. "Same goes for you, you know. If I can work at forgiving Dad you can try to at least hear Ty out."
"He was so embarrassing."
"I know but think about it. Neither of us have seen Ty act this way before. There has to be a reason."

Lou smiled sadly as the cab pulled into the drive. She wasn't quite ready to leave yet. Her visit had been one she won't soon forget and not in the way she had thought. She figured by the end of her stay she'd be running to catch the taxi vowing to never look back. But now she felt like she never wanted to leave. She looked back toward the house from her spot on the porch. "Cabs here."Jack commented as he held one of her bags. Lou nodded. He pulled her into hug followed by Lisa. "You don't be a stranger, okay? I wanna get to spend more time with little guy." Jack said being sentimental.
Tim rolled his eyes. "Let's go."
Amy stood looking just as sad. "Do you really have to go?"
"Yeah. I do. Peter's anxious to see us. And miss him." She looked over her shoulder to see Tim tickling Jackson. "I still feel like I'm dreaming." She whispered causing Amy to laugh.
"Love you." Amy said wrapping her arms around Lou again and held right not wanting to let go.
"Love you too." She returned the hug. "Now that everything is out on the open we'll talk more. I promise."
"Okay, Dad. We have to go." Lou said trying to grab Jackson from him.
"Okay." He frowned. "But you visit again soon. I wanna teach this guy how to ride."
Lou smiled widely. "I'd love that."
Tim places a kiss on her forehead before stepping back and putting arm around Amy's shoulder.
"Bye." She said making Jackson wave.
"I wanna be the first to know your in labor." Tim said pointing.
Lou chuckled. "Of course." She smiled before waving as she for into the taxi. She was so overjoyed and happy Peter had forced her into coming. It had repaired so many broken ties.