She's definitely mentoring her.
Cardassians have extremely good memories, [borderline photographic, if I remember correctly], but it does have to be trained. I think in one of the Terok Nor books, it mentions something about female Cardassians being especially fanatical about the memory thing. There was one girl who could not remember her research from memory, and a lot of the other female scientists gave her hell for it. Not that it is entirely a female thing either- Tain did the same training with Garak when he was young.
Its possible that poorer, undereducated cardassians might never get the chance to really grow this skillset, which could then stop them from moving on in life later. You're probably going to hire someone who can remember everything they look at over someone who would need reminders.