I'm going to have this game in particular be very casual friendly.
As for the moving enemies in the game, you'll be able to see and hear them patrolling/wandering from VERY far away before they're alerted to you. I only got her caught because I wanted to see the H Scene.
All in all if you explore every corner (and share most of your income with her), you could probably run into every enemy in the game and still be fine.
And thank you for checking my game out!