Q: My girlfriend bought an iPad 2 running iOS 4.x. She loves it but she does’t have a computer to synch with which creates some problems. She cannot update the iOS version and she has no backup for the content (mostly photos, email and songs). She has her own iTunes account. I am happy to have her use my MacBook running the latest version of iTunes, but I am worried that if I connect her to my Mac it will overwrite her data and substitute mine.…