I apologise in advance if I phrase this more bluntly than I want…
It’s not about you and it almost never is.
Almost all the time, in my experience, it’s not about me. It’s not what I’ve done or what I’m worth or whether I measure up or am good enough, special enough, cool enough.
People have their own stuff going on. Their heads are full, their emotional baggage is hanging around, their internal dialogue is something I won’t know.
If someone withdraws, that’s ok. It’s not necessarily forever and it’s what that want it need in that time. I’ve got plenty to be getting on with in the meantime.
Playing a game of Pick Me isn’t going to make them want to be around me more, and it debases my self worth. I’m enough as I am.
Be nice, be patient, allow people space (and take space yourself when you need it). When whatever it is that’s absorbing her gets resolved, she knows how to find you.