You may get more help over in the newcomers forum. It gets a lot more eyeballs than this one. However, here is my 2 cents.
I know it's hard not to get your hopes up when things go your way, but try not to get so eager when you get positive affection. Don't ask her to bed,don't be the one pursuing her via text after she goes home. Enjoy what she has to offer and let her sort through her mixed emotions at her own pace w/ o pressure.
Let her do the leading and try not to read too much into what she's doing or saying (for good or bad things).
BD: Aug 2012 Separated since May 2013 S born Aug 2013 Aug 2013 H agrees to consider 'baby steps toward working things out' H is/was actively seeing someone?