Plus 1 (that is what I call her) is a great kid, but HS is hard, for the girls I think even a bit harder. From what I recall from Amanda the girls are just mean in HS. So just be there for her and help guild her along the way. I know you spend a lot of time with both of them and she sure has a lot of interests.
If golf is for her she will let you know, you have a great relationship with her.