She cheats and get locks up but y do i feel like I’m locked up?

Long story short i had dated a female long distance for five months. When we broke up i thought she would learn her lesson, i would forgive her, and we would be back on track....uh NO! Things just went down from there. (Miss call no calls little to no texts and FaceTime was at bare minimum) I started to feel i wasn’t the only one. So four months after break up i changed number but would only call block (stupid,ik). By the next month she went MIA. I left numbers and concerned voicemails for weeks. And one day i gave up. Few more weeks later i received a letter coming from a correctional facility she wrote a week prior. BOOM! and there she was locked up and writing me a letter freaking reminiscing! Personally I’m pissed bc i felt like whoever she may have been tlkn to probably fell back bc of her situation and shes now trying to reach out. But the letter said nothing i wanted/needed to know. So of course i wrote her back answering questions and asking questions. It’s been three weeks since i wrote her. And idk what to think. Part of me feel she may be tlkn to someone else and tryna keep me at bay or maybe my letter is lost in the mail. Anywho if and when she do decide to write, i have no plans on responding this time.

*i broke up with her bc of her cheating on me and being too flirtatious.

*i later called jail and they told me she had 3yrs. (While waiting on her response.