As always, thank you all for your feedback and thoughts. It truly has been helpful and reassuring.
I am looking forward to talking about this properly (yet again!) with Alicia. We've spoken about the situation a couple of times, but she still doesn't seem to understand she's been a shitty hinge and that I haven't been unreasonable (both with the staying at home situation [I agree, Evie and Bobbi! I am def being generous putting her up at all when she has a paid-for hotel] and the discussing our boundaries with each other thing). It's not about convincing her or proving I'm "right," I'm just genuinely concerned and upset if she doesn't come around eventually, because I think she has been unfair towards me. I don't want to be in a relationship where my partner dumps her responsibilities on me. I'm confident we'll be able to sort it out, though, since she's had time to process it all, and from experience, once the emotional turmoil is over, it's easier for her to think clearly. (Same for me, tbh, it usually takes me a few days to finally come to a conclusion re: what I think about something, as illustrated on this thread. lol)
It seems to be a similar case with Jess. I did make the effort to speak to her eventually, telling her it was a one-off (in the sense that I don't mind getting to know her, but we are essentially strangers atm, and even if we weren't, it is not my job or my responsibility to do the hinge's work, etc., etc.). I also told her that I had no problem in saying I think putting someone up for a week is too much, regardless of what Alicia thinks, and that it's completely normal and common sense to think so. She agreed with the latter and said, "Regarding your point about just not wanting to host me for the whole week, I think that's a totally reasonable boundary and I have no problem in respecting that. I guess the thing that made me upset when Alicia said that it would be too much was that in that moment
it felt like she didn't want me there, which kinda sucked, as opposed to you just imposing what is as I've said a perfectly reasonable boundary" (bold mine -so, none of my business after all!!! an issue between THEM and THEIR relationship !!)
She did however initially disagree about the not discussing boundaries with each other part, and said that it was actually her idea (not Alicia's) to discuss them, because of "transparency" blah blah. I stood my ground and said it wasn't my responsibility and that that is not how I understand that polyamory works, that it is Alicia who is in a relationship with her, not me, and just all the stuff that's been mentioned previously on this thread. I even paraphrased some of your comments. heh
I was annoyed by this, and told Alicia I don't want this to happen, that I'm not dating Jess so I shouldn't have to deal with this, and she agreed.
Thankfully, I just received this message !
I'm still annoyed that I had to have this conversation at all, although I chose to do so, but I'm glad this has been the conclusion.