Yea. I see it as one of 2 things:
1 - WingMama knows Kaori is packing a little extra and is trying to hook him up with Naomi.
or
1 - WingMama does think Kaori is a girl and is trying to hook her up with Naomi. However, when she learns the truth rather than "OMG, how could you! you creep!." her reaction/thought would be "Oh, so this means we can definitely expect grandbabies!".
Either way her dad is going to have an aneurysm.