My ex moved 1,000 miles away near her family, got a new place, bought a dog, and enrolled her daughter in school there. And she still came back (although she ended up leaving 10 months later after moving back).
My point is, your W changing her address means nothing in regards to the possibility of her reconciling with you.
She has it in her mind right now, that things are over, so of course she's going to change her mailing address. But remember, feelings can and do change. How she feels today is not how she will feel 3 months, 6 months, or a year from now.
Give her the space she needs to figure her life out. And in the meantime, work on self improvement and get yourself strong and confident again.
