Hey everyone, really in need of some clarity right now because I’m so confused

About three years ago I met a girl through a mutual friend and we got along really well, so I added her on Facebook and we started chatting. We had been talking basically all day every day, after a couple of weeks she told me how she had stopped seeing a guy a few months ago who treated her really bad so she was still a bit tender from that and confused about what she needs right now but really enjoys getting to know me etc. I said that’s fine I’m happy to take it slow for her and see what happens.
So we continued just talking, and after a while she had said she really does like me, has spoken to her friends and realised I’m a great guy and not like the last one, she’s really keen etc. Because she’s a teacher we organised to wait until the holidays and go on a date then. That way I figured she still wouldn’t feel rushed.
We were still talking a lot every day, and just being really cute with her messages. This lasted about two months.
So school holidays came along, and we decided we would go to the movies, (she had also suggested for a couple of days later that I came with her to her friends party). We were holding hands in the movie and got a kiss, it went really well. Our mutual friend messaged me the next day telling me how she is saying all these nice things about me.
When the day came for her friends party she told me she had a really bad migraine so she couldn’t go, I had no real reason to doubt her so was sympathetic and understood.
The next day she was very quiet, and I could tell there was something else wrong. I asked her if she is okay, had I said something to upset her, she said no she’s feeling confused again about how she feels about me. Asked her if something had happened for her to feel that way again because it seems out of the blue, but she couldn’t really say, was just a lot of ‘I know I’m not making sense I’m sorry’ the conversation basically ended with me saying perhaps she needs a couple of days to herself to have a think about what she wants.

The thing is, what do I do? I do really like her but I’m scared of this happening again.. I feel as though being confused at the start is understandable, but things were going great and then she was confused again, what’s to say if we continue that wouldn’t happen again down the track, when we’re actually dating.
Ive been in that situation before where I was constantly worrying how the other person felt and I really am scared of being in that situation again. Is she leading me on and enjoys the attention of it all? Is it worth pursuing or am I better off cutting off to save the pain, because I do really like her.