Has any body got any experience combing out your own or a friend's dreadlocks?

A girl who works with me has a whole head of massive long dreadlocks half way down her back, that she's had for three years. At Christmas she becomes a registered nurse, and has to get rid of them. She doesn't want to cut her hair really short, but is wondering whether, if she cuts them to shoulder length, she could comb the rest out and do 500 moisture treatments?

I thought perhaps soaking them in a really slimy (eg. amla) oil over night, then having a go, very slowly and gently with a fine-ish comb?

Thanks guys!

Yvette