How Do I Know She Still Have Feelings For Me And What Should I Do When She Does? Its Long But Its Good To Read?

How do I know she still have feelings for me and what should I do when she does?
So, yo, check this out, I met this girl during the second semester of grade eleven. I never knew her existence until we met in one class. Apparently, she is pretty popular girl but I didn’t know about her until then. We start off as friends because we are both out going, fun and sociable so we matched like two pieces in a puzzle. Then we started to tell me about her ex and how he dumped her at a lake. She said she feels ugly and unworthy and all that shitty feelings. It might seem kinda corny to y’all but she was genuine with those feelings. She isn’t an attention whore (excuse my language). But when she was telling me this, I looked into her eyes and said: “You are beautiful”. (Yeah, it’s corny but she is the only girl I called beautiful in my life). She believed me. Time went on and my feelings grew stronger and I told her i’m falling for her. She told me that it won’t work out in the future due to cultural reasons ( she’s a Lebanese and I’m Bengali) and plus she had a lot guys after her, too, apparently telling her the same things. So I had to do my dirt to prove it to her. I got my hands dirty and she started to fall for me too. I sealed the deal by even writing and performing a song for her during an event at school ( Naaah, I didn’t call her out but she knew it was her!). A week went on and everything was perfect.
Until I started to overthink things…
We spend some time together and I thought I was being clingy and attached to her. So I kinda, actually, started to ignore her. Kept some distance. I mean, they say distance makes the heart grow fonder or some **** like that. But it was too much and I ended up making her feel unwanted and hurt. We got together to talk about this. She said she shouldn’t love me anymore because of culture and its better off being friends. I was hurt but she hurt more. Time went on and we didn’t talk or conversed like we use to. Actually, She tried to start conversation but I was busy when she did. She felt invisible and unwanted again. So then, she asked me if I’m angry at her and I said I wasn’t. So, I asked her to chill with me and she was happy when I did. The end of the year approached and exams started. We didn’t get the chance to see each other of them. I was leaving to Montreal for the summer and I decided to leave her a message on her vmail. She texted me back telling me how I make her smile and laugh when she would be down. She said I am kind, sweet and loving person. She said that she loved everything we had, including me. She called me all these affectionate words like Hun, Hunni, Sweetie, and couple of new ones like Sweetheart, Babe, Boo and Cutie.
So does she still have feels for me and what should I do?