Woah hold it right there, that's going a tad far.
Firstly, I'm not so sure if Ame even had a clique back when she was an indie. Almost all of not-Ame clips I've came across on YT were from solo streams, with only a few of them of her playing with her ex-bf apparently. The only content creator I know she used to be close with was Silvervale and yet I couldn't find any collab streams between them.Ame does have a very good opsec in that she never talked about hanging out with anyone besides her Hololive friends and families, so it's hard for me to completely deny that possibility, I just find it very unlikely.
Secondly, like what others have said, despite idol dreams and whatnot, both Kiara and Calli still stream often and even collab within EN a lot. I heavily doubt they will not immediately jump to collab with Ame if she even ask, especially Kiara. (Ame never did collab much with Calli even from the beginning anyway)