Going to a Church I'm not happy with?

I'm 14 years old and go to a Baptist Church with my Mom. Long story short, I don't like it. During my last trip to Puerto Rico, I discovered that my Mom used to be a devote Pentecostal (all of her family still is). After visiting a Pentecostal Church there, I realize I love it and agree with all it's practices and beliefs (and yes I've researched it for a while). My friend goes to a pentecostal church and I would love to go visit with her one Sunday, and possibly become a regular there. How can I convince my mom to let me switch Churches ? I know she would never switch, but I would be a lot happier and learn a lot more if I did.