oo dang i actually sorta forgot how to get this one, if it is what i think it is. think you need a lot of high magic and high star bar.
if you reload right before the last growing daughter quest if you accidentally got a parrot waxcap, perhaps you'll get it?
i remember having the mold trait for her and getting it removed during late growing stages and i got it.
anyway, i suggest letting the daughter meet the witch, and give her a present once she grows up?
and a little fun fact: the mushipedia is ordered by types being creepy, bright, culinary, poison and magic. there's always 2 mushroom with the same type in a star section (excluding 0 star)