what did i do wrong? m25

So last year i matched this girl on tinder and started talking to her

We talked for a few months and hit it off pretty well. Because i have some selfesteem issues it took me a long time to actually ask her out, to the point she actually asked le out before i built up the courage.

We live very close to eachother to the point we both met up in our hometowncentre which is about a 5 minute walk from both oir homes.

We went barhopping and had a really good time. At the end of the date i walked her home, on said walk she actually kissed me. And when i dropped her off at home we kissed again.

After the date we continue talking via whatsapp daily, sending eachother goodmorning texts, you know the regular

I ask her out again 2 weeks later and she says she can’t cause she was too busy with work and family stuff.
I know her dad is really sick (small town) and she has a high stress job. So i tell her no worries

Well its been nearly 4 months now and still we had no second date, she keeps telling me she’s too busy.

I actually did tell her that if she doesn’t feel like that about me there were no worries we only have been on 1 date and that i’m mature enough to take rejection. She assured me that wasn’t the case and that she wasn’t leading me on a’d that her life is just hectic rn

Last week she finally told me she should have some time free in 2 weeks so we would go on a date

However now i suddenly don’t hear from her anymore

She still comes online but doesn’t read my messages
Untill now we used to talk daily for about half a year now

I’m not hearthbroken about it like i said we only went on 1 real date i just don’t understand what happend

Tldr: went on a great date with a girl, she still showed alot of interest but doesn’t want to go another date