Lusamine's definitely the MILF of the two here because:

1. She is a mother.
2. She's over 40, yet looks so good for her age.
3. Cynthia ain't got no one. She flies solo. Lusamine is kinda the same, though, due to what happened to her husband, so I guess she too could be hit on.

Too afraid to say they just want to fuck mother and mother-coded characters.

Show them an actual hag and they'll suddenly be afraid.