She cant grow locks from permed hair ... she will need to cut it off and start from scratch ... when you grow locks you HAVE to start from the roots ... so she would cut her hair low and let it grow out then start twisting it from when its short and maintain ... or if she is uncomfortable with having it so short at fist then she can just grow out the permed hair a bit then when her natural hair grows to a certain length she can cut off the permed hair and start to twist. But really cutting it all off and starting from scratch is how she will get the best results. I'm around alot of Caribbean and Rastafarians and this is how they grow theirs