Help reviving things after ghosting

I’ve been casually dating this chick for a month and things were going really well. Two weeks ago, she flaked on a date for the first time and started texting less, just before I had to go on a work trip. She still initiated rescheduling the date and we planned on doing something when I got back. While I was traveling, I didn’t text her at all. I got back the other day and texted her to schedule a date but now she’s ghosting me. She would always reply within an hour or two before this. How do I revive this? Not sure what to say. I think I may have fucked up by not texting and it may be time to move on, but I want to at least try because we had great chemistry and I actually liked hanging with her. Would really appreciate some advice @avilench .