Go with your mom, you're family won't be too far away and neither will your friends so a trip to see them can happen every once in a while. With your mom moving up there, as you've already said emotionally unstable, she certainly won't benefit from being alone and your company may keep her happy. You will meet new people of course, and I'm sure you could find a job somewhere around where you live. Good luck with your decision, hope all goes well.