Hi all. I posted a couple days ago about bringing home a 3mo boy (Finn) to my 8yo girl (Evie) 6 days ago. I have kept them separate but the baby has escaped a couple times and gone for Evie which she greeted with a hiss. Otherwise Evie was acting mostly normal. But now she is ignoring his existence, has a significantly decreased appetite, is hiding most of the time, and has thrown up spitty looking vomit a couple times. I just read through every similar post on this site and am 100% sure it’s stress related from the kitten. I just want to know if it will pass or am I going to have to rehome the kitten. Is there anything I can do to help her? I have Feliway and calming sprays. I don’t want to take her to the vet when that will stress her out more and I’m not sure how much they can do other than give her anti anxiety meds? I feel so awful I’ve made her sick.