No, returns of gifts simply do not work that way.

As a juvenile using a device purchased by an adult, an Apple Store would not do anything anyway beyond provide warranty support.

The phone number can be changed but the purchase is still tied to her.

I know this sounds harsh but, no, you do not sound like a rich snobby kid. You sound appallingly entitled and need to grow up. Your father would have purchased something else but unfortunately he died? You distill the death of a parent to something that cold and selfish? Your mother "is the type" as if you are a judge of types? Actually, your mother is the type who bought you a rather expensive gift. for which you are showing no gratitude. I am sorry but it sounds like your mother has good reason to keep you on a leash if this is the best you can manage.