Why would she trap the living space in any case? Would that not cause her problems as well?

[ You really just do not want him any where around, now do you Sephiroth? Genesis would have laughed if he did come across a trap - he doubted any of them would be that harmful, but he was also a bit more willing to get pranked than his former silver-haired friend. ]

I take it he walked into one of them?