Maybe not gardening, but how about floral designer? If you have DU and she goes to college she can easily skip the dirty part where you work your way up and start with arranging flowers.
I also think style influencer would work well with her very particular sense of style and it's a rather fun career to play as you can give her a work space and play it as an active career with the work from home option.
I can also see her wanting to figure out what really happened to her and go into the scientist career.
