I don't want my mom to keep her christmas gifts at her house
Why don't you want your mom to keep her gifts there?
It's easier to unwrap over here.
That seems weird. I mean you probably shouldn't worry about where your mom keeps gifts, though.
But I want to see her reaction.
Your mom could call you over the phone and you both could use video to watch her reactions to your gifts, but if she doesn't want to drive over to your house for that, then you should respect her decision and accommodate her.