> She's unwilling to do programming interviews

> she's unwilling to take advice

> She's been unwilling to try things

> How can she overcome this hurdle?

It should be obvious but if someone's not willing to change, they won't change. If it were me, I would probably stop trying to help her. It seems like she's even made that clear to you "she's unwilling to take advice from...me"

I know it's probably not what you wanted to hear.