Lexi accepted both the brother's comments about there being lots of room in the bunker and that she wouldn't be in the way. Dean's particular comment about being able to hold 'a tiny woman' made her scoff and smirk, it not being the first time someone had made some kind of remark on her height, but with that lack of height came agility which always proved useful on hunts.
As they all ate it was rapidly clear from Dean's constant groans as the food went down that he really was appreciating the cooked meal, as well as clearly they hadn't eaten proper home cooked meal for a long while. She knew they ate takeout a lot just from what Sam had previously said on various phone calls or them bumping into each other and take out bags were evidently in his grip. It made her begin to think that when she leaves, maybe she should make a batch of food that would do them for a while if put in the freezer, just to keep them going for a short while at least.
She listened to him as he confirmed that the bunker was in a good location and the idea of living here with most locations being less than 24 hours away did seem like a dream. She continued to eat what as left of her bowl of food as she too noticed out the corner of her eye that Sam was looking between her and Dean a few times, but she didn't think much of it, deciding to just ignore it instead.
When Dean spoke to Sam, he rose an eyebrow in shock that his brother was actually deciding to take a shower and clean up for a change. His shock turned into a slight snigger as he mentioned the pie. "about time!" he joked, but he was actually relieved that after days of nagging for him to look after himself, he was actually choosing to do so. 'maybe I should have brought Lexi here days ago' he thought to himself, unable to not think that having her here quite possibly was a factor for Dean's change of behaviour.
Lexi looked up at Dean surprised that he would pat her on the shoulder, "its no problem, glad you liked it" she replied as he went by, then looked at Sam and gave him the look that perfectly said 'I wasn't expecting that'. With Dean gone and out of earshot, Lexi and Sam spoke to each other about all kinds of random things as well as Sam joking about having brought Lexi to the bunker before now if it meant Dean would actually take a shower more often.
When Dean came in and went straight to the pie Sam smirked, glad to see a glimmer of the old Dean back in the room, not just because he was looking at the pie like it was gift from the gods, but also physically looked like his old self in his clean clothes and shaven face. "you can have however much you want" Lexi commented to Dean, knowing she was now too full to eat another thing. "that don't mean the whole thing though" Sam teased, which got him a jab in the arm by Lexi. "ow" Sam laughed, rubbing his arm, "don't be mean to your brother" she jokingly scolded him.