Hello. My sister recently got a new Nook HD. I wanted to share my apps, movies, and Play credits so I signed into Google Play. When I did this, it also signed into contacts, calandar, and Google+ as me. Is there any way to just use Google Play? Rooting and returning the tablet are the only two things that can't be done. Also, if you were to sign in with another Google account, could I use that account for everything except the desired apps? Thank You.