My [28F] best friend [30F] wants me to make a huge life decision on her life (UPDATE)

Original post
Hi! My first post didn?t get that much attention, but I thought I would update you guys since a few people were kind enough to be interested in my story.
I made my post on Wednesday, two days after my best friend Anna insisted I tell her what to do. I expected her to press me into ?helping? her again, but it didn?t happen.
(I use the term best friend very widely here; I?m probably not Anna?s best friend, but she?s my oldest close friend and we helped each other through a lot of stuff in over 10 years, but we don?t talk every day or hang out that often)
Anyway, today she texted me ?Why didn?t you tell me to stay??
Turns out that she decided to break up with Paul last week. She lived pretty close from work, and now she?s staying with a friend and hates having to take two busses, and having no good restaurants that deliver food to her house nearby; she can?t afford living on her own in the neighborhood she lived with Paul, and refuses to get a roommate she doesn?t know.
So she hates everything about her new life and literally complained for hours.
Some of you said that having new friends and being more independent is nothing to build a new personality on and abandon her long-term partner and boy, apparently you were so right.
I don?t want to meddle too much or say generic stuff like ?you?ll soon get used to it? because I know it truly sucks to have such changes for the worse, so I just said ?if you regret breaking up just talk to Paul, maybe he wants to get back together and you guys can finally find some middle ground?. They are both pretty stubborn so idk, and I won?t insist. I also said I was there for her whenever she needed to talk.
So things went to **** but I think that at least I did the right thing refusing to decide for her.
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Edit: Wow, this blew up! Thanks for all your responses. I didn't notice how unfair this situation was to Paul until you guys pointed it out. I read all the messages and there's a lot of interesting inputs, you're all great :)
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Tl;dr: my best friend wanted me to decide whether she should leave her long-term partner or not, over the fact that she changed and he didn?t, and they were annoyed at each other. I didn?t do it. She left him and regrets it.


Source.