When I first got my PS3 I was 16 and when I signed up for the PSN I (mistakanly) put in the date of my real birthday. So, I had to establish two accounts; one for my mom and one for me. This sucked BIG TIME. Although I own the PS3 and my mom has nothing to do with it my account is considered a "sub-account" and whenever I want to make significant changes to the settings of the PSN I need to do so through my mother's "master account". So, I want to make my account the master account. I'm willing to start a new account if I have to but (I've tried) it seems impossible to delete my mother's "master account" and replace it with one in my name.
I had to create a PSN ID for my mom as doing so was a requirement for establishing her account. It's super lame and I put no thought into it. Because of this I can not simply change my mom's account name from "Mom" to mine because doing so would mean adopting her PSN ID (which I defininitely do not want). Basically, my question boils down to this: can I delete my mom's account without doing a system restore (as I have an internal memory card on my PS3 that I do not wish to lose and a system restore would delete it) and if not can I change the name of my mom's PSN ID?