Why would an ex girlfriend contact me?

I went out with this girl for like 6 months. I treated her like a queen. She was 28 and never had a boyfriend (If you knew where see lived, you'd understand why) We had a few arguments over text messages that one another misconstrued. We had a trip planned and she back out on me at the last minute. I think the fact I was an Atheist bugged her too, because she made comments about it. Even though, on my dating profile it stated I was an Atheist. I think she thought she could convert me, but realized it wasn't that easy. Well I apologized for breaking up with her, and asked her if we could work it out. She said she needed a few days to decide. She decided no and wanted to be friends. I couldn't do the friends thing, because I was in love with her. She said she loved me too, but it wasn't fair for me to wait until her feelings to kick in. So I said, forget I exist and lose my email address and phone number. I would get too jealous if she was dating someone else, so that's why I didn't want to be friends. Because I really did love her more than any women I have been with. I sleep with her too, and I was her first. Well anyways, a couple of days ago, she emails me, "Merry Xmas. I know you don't want to be friends and told me to lose your number. And she says, "Sorry for hurting your feelings. I hope you can forgive me. and I hope you find happiness because you deserve to be happy". I'm not emailing her back. I moved on. But I'm just curious why she emailed me. I honestly think, she found out nobody will treat her like I did. I mean she wasn't even that good looking. I was out of her league. Everyone says that. I know she's not going to get a better looking guy than me. She's 29 now and I was her only bf. I know that for a fact. I think she realizes she messed up. I think I built her confidence up, and then after we broke up, she realizes nobody wants her. I mean she's not ugly at all. But she's no Jessica Biel. I don't mean to sound y or egotisicol .