Help me out: was I wrong in this situation? ?

nope, not at all. your mom sounds like mine lol, she hates nasty rap lyrics and things like that. VERY old fashioned. i would think if i brought my mom to a Lil Wayne concert, she would ruin the whole experience for me. so dont feel bad, i would do the same. it doesnt mean you love your mom less, you just want the best experience you can have