Can You do Something about the Memory Mom?

I am already tired of hearing the same complain from my daughter about her computer memory. Well it's our fault actually because we haven't upgraded it since the time we bought it for her. Who would ever think that she would be able to fill up all the space? Ah teenagers nowadays are fond of downloading, be it songs, wallpapers, whatever. And who am I to complain? I'd rather they do some stuff online rather than be on the streets doing whatever, now that's scary.