This tells me she is only playing to spend time with you and she maintains just enough interest/enthusiasm to keep you from thinking that she's bored.
Don't get her a new disc. If she wants one she should buy it herself.
Get her flowers or jewelry (it doesn't have to be gold, plastic "costume" jewelry from target will still make a girl feel pretty). Trust an old married guy on this. Get her a gift that says "I'm thinking about you" not "I'm thinking about disc golf".
Ya know, I'm pretty put off by this on a number of different levels. Primarily the idea that you know the inner workings of a total strangers relationship based on a few sentences.
A comet or mako3 would work nicely.