A little background info as briefly as possible... around 4 months ago my girlfriend broke up with me, packed her stuff and moved across country. We lived together for about two years, both in our early 30s, dated close to 3 years. We did move in together rather quickly and really there weren't any major problems at all as far as big arguments etc. She did seem to change a bit upon sharing a roof, in the sense that she seemed to be much more protective of her 'space' and seemed to sometimes avoid being open/vulnerable, just generally more guarded. But thing's did go well for the most part and no deal breaker type things went down. Her family visited often, which at first was a lot for me to handle, but it made her happy and I grew to enjoy them visiting often. I became very attached to her young niece and nephew who's father was more or less absent in their lives. We very quickly all became like a family.
Over time, my girlfriends interest diminished, she said she wasn't happy, it didn't feel right etc. she began to spend slot of time on the phone texting and sometimes talking to a 'guy friend' and I'm sure you guys can predict the rest. She decides to pack her shit and move across the country and give it a go with him. I was obviously destroyed, did a lot of yelling and cussing and we moved our separate ways. I didn't contact her in any way after I left the house. And she didn't me.
To shorten things, she's contacted me, things aren't going how she had hoped etc. never really says she regrets leaving me or made a mistake. she doesn't contact often and I've yet to initiate contact. For some reason, I am compelled to write her an email telling her that I think she really made a big mistake leaving me. Is this a bad idea?