I would like to disagree. I do think that a more simplified lifestyle(With fewer, more meaningful, more compatible people who bring me joy) is a good thing to go for.

I don’t feel like I’m owed friendship to everyone I know or got relatively close to. Sometimes both parties grow apart, sometimes the circumstance which brought us together no longer is relevant. In that case, a nice prune of people is in order.

It seems to me that she outgrew your friendship and you still would like her as a friend? If someone who I’ve grown apart from was to get back in touch and try to rekindle something I would never be rude and would definitely try to make times for them again. Perhaps if it is that you miss this person, you should call her up and see if it could work again?