I got a 4x4 and 5x5 for Christmas and I don't know what it is, can you help?
The parts are 4x4, but the assembled cube is 5x5 (My 4x4 is in pieces right now)
Rubik's brand is very loud, and eventually, she'll want it to be quieter, and most of the other brands are quiet, so maybe you can persuade her then. (I know this from experience)