Concert on Mothers Day?

Im freaking obsessed with Starkid and "A Very Potter Musical" and "Starship". The YouTube Digitour is coming here to KS..but it's on mothers day. I asked my mom once before and she said no. I realize that i shouldn't ask again but I REALLY WANT TO GO. She doesn't understand this. The Starkid actors are doing a meet and greet and I want to be there sooo bad! What can I say to my mom to help her understand? We wouldn't leave until 5. She says I don't love her if I go. HELP!?