Can someone help me?

Hi everyone,

I met someone on holiday, we talked for a while. After the summer, she went back to university. And everything changed after that. She was no longer the person I got to know. I wanted to get to know her better and better while at the time I pushed her away from me more and more, because of difficult period plus to clingy.. other side I know she’s scared about her past, may it be difficult to open up? she was the person I could fall back on during the difficult time, had a lot of support from her. now i miss her but don't know what to do. I want to respect her space but other side I would like to pick up the thread. Don't want to just send a message "hi how are you".... Anyone tips on what best to do? I'm not very good at communicating, maybe this is my problem?