So you've just been able to pull yourself back together after the separation, and are ready to start fighting to win her back and start fresh...but you're not sure how much she still really cares about you and have no idea how to find out. Don't worry too much, there's actually a pretty easy way!
It's a simple fact of nature: people treat others in different ways depending on how they feel about that person. Ranging from apathy and indifference all the way to the extreme emotions like love and hate, the scale of emotions is very widespread. So how do you decipher where you stand? By watching how she treats you, of course!
To be specific, you'll want to examine how open she is towards having you in her life at all. The best way to do this is to see how many of your calls she's returned or how many times she's tried to contact you in a positive manner. Ignoring your calls and refusing to get in touch with you is often a bit of a bad sign, but it's not necessarily a blatant "I don't care anymore" situation...many of these cases are a bit deeper and can still be resolved, but it's an uphill battle.
What looks better for you from the start and gives you a much more favorable opportunity to begin with is if she seems to be generally fine with having you in her life to a certain extent. If she returns most of your calls and tries to get in touch with you herself on occasion, and she seems generally pretty friendly...then it means you still have a solid chance. She may not still have the passion for you that you shared at the beginning of your relationship, but it hasn't completely gone away either...often all it needs is to be woken up again!