Yes. An offspring does not have to have the same symptoms as you to have candidiasis. The symptoms can be different.
Typically, cuts in the corners of the mouth are a vitamin B2 deficiency. Maybe some vitamin drops for children? Also, you might try Grapefruit-Seed-Extract and water spray in her mouth. She will not like it, so maybe put some stevia in it.
I have read your entire story (well written and understandable, btw) so I understand your background with this, all right. Could you please list your questions now so I have clear in my mind what questions you'd like answered?