Tamanu oil is a miracle. I use it as a spot treatment everyday. It has faded some really old acne scars and I found that since I used it, the occasional pimple no longer leaves a scar. I would also recommend she uses a low concentration chemical exfoliant after she washes her face. Something with glycolic acid or lactic acid. Plus tell her to wear sunscreen everyday. Repairing acne scars is useless without it.