Most Helpful Girl
Feel it out. Since you're still in contact with each other, chances are you're gonna see her every so often. If you feel like she's starting to get happier and more open to starting things up again, then ask her.
If this is really about her giving you space to work on yourself, though, I suggest you take the time to really improve yourself till you can say you're happy with yourself. Take it as a sort of gift from her, giving you time to take care of yourself.