I doubt you did anything wrong.
And things are weird right now. Honestly, don't expect bubbly responses -- if you get responses at all. People are either at home and bored (and broke), or they're astoundingly busy. There aren't a lot of folks who are in between.
But here, let's address the elephant in the room.
I think this is a lousy 'relationship' and I will tell you why.
You are using it as a crutch to avoid meeting people in person. Forget how now looks (social distancing, etc.). This situation will not last forever. When it ends, get out and meet people! Talk to your fellow human beings. Having a long distance crush like this is a way of avoiding meeting humans in person and falling in love, and yes, risking rejection.
Rejection can happen. From this gal (probably; I doubt she feels the way about you that you do about her, sorry), from gals in your community, etc.
But the road to success runs right through failures. It runs through chances, a bit of anxiety, and wondering if you're making the right move.
Be brave. Be bold. Get out there when this is all over, and take some chances. Quit wasting your all-too short life pining for this woman who may or may not return your affections and certainly has shown no real sign that she does.
Meet someone who is close, and real, and you can touch and see just about any time you want to. You don't have to stop being friends with this woman. But dial back the emotions there, big time.
Find someone close by.