Cannot delete songs on iPad after home sharing?

I synced my ipad onto my mums laptop because we share an iTunes account, thinking I only synced one playlist. It has now synced our entire iTunes library which contains a LOT of music that I don't like at all, my mums. It is now not allowing me to delete songs by swiping, and when I try to delete albums it won't do that either. It's a nightmare because usually I'd just play through y library but I'm constantly trying to find songs I like amongst my mums that are filling my library.Please help!