See a Kumari will be given to bramhachari by their parents ,they wont give to a sanyasi, as for Sumangali the question didn't arise at all. So a Sanyasi's Sanyasam is not in danger by both of them. So there is no problem in giving dharshan to them. Also a sanyasi gets Bhiksha from a sumangali or kumari .
Leaving paramacharya out of the discussion, this is about all sanyasis in general:
If a sanyasi cannot see mother in all feminine beings, its is against his sanyasa vows.
If a sanyasa thinks his sanyasam is in danger because of a woman, then he need not take sanyasam at all. He better be a grihasta.