Rewards app Amazon gift card and point difference.

In my rewards app a starbucks gift card is 5250 points for me. On my gf and her sons account its 6500. I also can purchase Amazon gift cards and they can't. My gf and my account both show us as level 2. Ive had my account for years while hers is pretty
new. Thats the only difference I can see. When will she be able to purchase Amazon cards and when will the amount of points to purchase for cards be lowered?

:)