Hey man,
As a hair fetish friend, I just want to suggest you that,
1. Show her the link of this forum,
2. Show her the link of long hair palace
3. Shoe her the link of Foxyanya, Samantha Snow and Leona
and let her know that, the hair fetish is original in born habit of some men "us". It is not weird.
If her hair is too good, don't try to dump her. Quality long hair women are precious. They are not much in population.