I've found that in relationships like this the greatest issue is respect.
Imo you're not overanalyzing - but seems you've never exactly seen the situation for what it really is until now either.
It's difficult when you're left with memories...

Agree with the general consensus of moving past this friendship. Can maintain the distance she's put up or walk away from her; if you're finding this way too difficult to do counseling is possibly in order.