Cant tell if this girl likes me

I used to go out with this girl and I screwed up really bad and sort of ignored her. It is a year later now and I realized that I made a horrible mistake and im really regretting ruining the relationship. Now it seems like the girl is over it and she started talking to me again and I really like her so im trying to see if she likes me but she is hiding it because she doesnt want the same thing as last time to happen. There are a lot of mixed signals. One thing that really gets me thinking is that I text her all the time and when I do she does answer and we get in very long conversations but if I dont start it the conversation never happens and that gets me wondering if that is a sign that she doesnt like me. The thing that counters that is that after talking to her for a while she agreed to hangout with me and she was even fine hanging out alone which gets me thinking if she likes me. The last major sign is that there was a little point probably a month ago where she always ignored me and if I even brought up the idea of going out she would reject it as fast as possible. Now she seems sort of happy when talking to me and even tho I start all the conversations we talk for hours but now when I bring up going out she doesnt directly reject it which gets me wondering if she does like me. Please help.
this whole incident has made me pretty depressed and I have never had depression ever in my whole life so im thinking that this girl must really mean a lot to me

Yes she definitly sounds conflicted and maybe she is trying to protect herself from getting hurt again. Maybe when things are going well between you she let's her guard down and that scares her because she's expecting to get blind sided. But that's all just speculation.

Did you ever just own it and apologize for messing up? It doesn't have to be a long conversation. Just an "Listen, remeber that time I ignored you? Well I was an idiot, I see that now and I'm sorry." Don't tell her you like her or anything extra because that gives her the impression you're appologizing to get something out of her. If she really is feeling guarded that kind of impression would send up all sorts of red flags. Just say it simply and honesty with as much self respect as you can. She will respond to your sincerity.

Now if she's still upset about it she might want to argue about it. Just listen to what she has to say, don't argue back. Treat it as her opportunity to vent her feelings, wether those feelings are right or wrong is irrelevant.

This will do three things for you: it will show that you acknowledge and learn from your mistakes, it will get rid of all the unspoken things that are getting in your way, and it will help her to feel as though you're not out to get her.

Take it slow, do it when she's in one of those good, talking for hours, kind of moods, and then when your done do something light hearted and fun to lighten the mood like making her laugh or going out with a mixed group of your friends and her friends.

i ask this girl that I like her and she said I don't care with a calm personality. what does that mean