Feeling Lost and Confused

I never thought I'd find myself here. I mean, sure, I've always had a certain kink for age play in my fantasies but to actually do it with someone... It was just something that happened one day when we were out for drinks, and the idea hit me hard. We decided to give it a try and ended up playing mommy-daughter for a few weeks now. It feels strange, really. Like I'm living in two different worlds at once: the real world where I'm just an ordinary stay-at-home mom, taking care of my kid, and this other place where I get to be someone else's little girl again. It's fun...but it's also scary. My partner is so good at being a mommy, firm but loving. She reads stories to me before bedtime, helps me with homework (yes, really), tucks me in. And then there are the other things...the cuddling and the kisses, and oh god, the other stuff that happens when we turn off the lights. I'm not sure if this is right or wrong. I don't want to hurt anyone but sometimes it feels like something is missing from my life, something only these sessions can provide. Is it normal to have such different roles with someone? Should I tell my partner I feel unsure about where we're headed? If any of you out there have experience in this or similar kinks, could you share some advice or thoughts? Am I the only one who feels like this?