Why did she suddenly apologize?

Mezo1
So, I was in this relationship (long distance) with this girl about a year or two ago. We met face to face once and were friends for about a couple of months before actually getting in the relationship and were in the relationship for about 1 month more or less. Basically, to make a long story short, during the relationship, she was really into me in the beginning but then kinda quickly started getting distant, argumentative and disrespectful toward the end until she eventually broke up with me. We still stayed "friends" for a couple of weeks but she still acted the same. I eventually found out she was dating someone else (although she lied to me about it when I asked). We got into an argument and we stopped talking for a month.
Eventually, she broke up with the guy (I know because she told me about everything even tho she said it in a way that she didn't think she did anything wrong) and I reluctantly agreed to become friends with her again. It went good again but then she eventually started doing the same thing ( In fact, we had a chance to meet up again but she decided to see a friend). Eventually, she started blaming me for being too much "pressure" and making her feel a certain way and that she got back with the guy a couple of weeks ago but didn't wanna stop talking to me. I told her I'll stop being selfish and to lose my number and everything. She apologized but I ignored her and deleted her number. About a year passed and she texted me just my name with "?". I ignored it and blocked her number. About a couple of days ago, she unblocked me from facebook with an apology saying basically, " I'm sorry for everything and if I hurt your feelings or caused you unnecessary pain. I really hope you're happy enjoying life". I thanked her but the she tried having a conversation right after so I told her I was busy. A couple of days later, she blocked again. The weird part is I saw that she was married to the guy now for probably a while, so why is she apologizing now?
Why did she suddenly apologize?
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