Determination is more important than talent. I always had a lot of natural talent so a lot of things were easy for me. I expected things to always be easy. They weren't. I got frustrated easily. Make sure she doesn't think she can glide through life on talent alone. Minimize the role of talent, emphasize determination.
Teach her to determine who she wants to be and then be determined to be that person regardless of critics, naysayers, or the status quo.
Teach her to determine who can help her reach her goals and then be determined to convince them to help her. Due to my natural talents, ALL of my teachers just assumed that I would be fine with no help. This left me clueless about anything that wasn't in a book. Now, I read a lot of books so I knew a lot of stuff, but there aren't books about how to get other project members to do their share our even what to do when they won't. No books about getting into grad school really tell you what you really need to know. She will need mentors. She should be determined to find them. Independence is great but help is better.
Finally, tell her not to be afraid to use your death to get the help she needs. She can say, "If my dad were still alive, he would help me with this. But he died last year, so can you help me with this?" If that's what it takes to get people to help her, she should do it. However, she should be determined to do all the actual work on her own. Guidance is good. Getting people to do her work for her is bad.