It kinda says something about Taylor that she remember the 3-ish months with the Undies being in almost constant enemy fire with little to no rest and almost died more than a handful of times closer to her heart than the 2-ish years she was part of the Wards with a lot less danger and a healthier enviroment (if surrounded by people that don't really like her very much).
I mean, extreme experiences drive people closer very fast. People of shared trauma often bond easier with each other because they understand each other. Outside the job to capture Topsy in Chicago, we really don't see a lot of Taylor's time in the Chicago Wards. And, to be blunt, there's a good chance that outside of the few times she was able to work the system (like she did with the Topsy job), Taylor and the Chicago Wards weren't deployed to big threats. And even if the rest of the Wards were, Taylor was still on probation, and likely far more strict than any other due to her infamy at that point.
In fact, out of the... 3(?) distinct missions we see her on as a Ward/Probationary Ward (New York with the Adepts, Vegas with Rime and that team, and Chicago with Topsy) nothing even comes close to her first week or so in Brockton's cape scene. Edit: I mean, hell. Her internal monologue regarding the other wards/capes in NY and Vegas actually made me laugh. I think there's a line where one of the Wards in Vegas mentions that he's only been in a small number of fights and he's been a Ward for months (or something like that) and Taylor is immediately jealous. Found the lines
Drone 23.2 said:
"Sorry. I mean, Prefab was talking about opponents we couldn't hope to fight, and I've only had two real fights so far. One of them wasn't even a real fight."
"You're new?" I asked, raising my eyebrows.
"I've only been a Ward for a month."
Only two fights in a month. I felt a pang of envy.
As for being around people who didn't really like her very much, I can't really comment. I know during the Echidna fight, they didn't trust her or the other Undersiders - with good cause mind you. However, by the time she's in Chicago, Tecton has basically requested her for his team, and they worked well together against Behemoth. It's been forever since I read the chapters after the timeskip, but I don't recall the feeling that the Chicago Wards didn't like her. It's more that she never really felt the need to bond with them the way she did with the Undersiders because she had kinda started focusing on the End of the World thing to the exclusion of pretty much anything else. My memory could be wrong, but she actually was closer with Theo than anyone else because he knew about Jack's threat, and was already training to fight him (even if she never did pick up on the fact that he was into her.)
Or it says more about the auther and readers that they assume time skips are largely irrelevant. I don't care who you are, 3 years as a teen makes a huge difference even just at the hormonal level. I see the relative lack of non dramatic character development as one of worms biggest flaws.
I've always been torn about the timeskip. I mean, I understand why it was done, but I think I agree at least partially with what you're saying. Even if there had been interludes/flashes for the months between Khonsu showing up and the timeskip's ending, showing Taylor doing other things, or interacting with others, it would have felt a lot easier to swallow. But I do recall when reading it that the timeskip felt like a sudden hammer to the face and prompted a "Huh, so that happened." sort of reaction.