She would feel kiiiiind of bad about it, but...
Lexi would totally cuck her own kids.
Not to destroy their relationships, but just because she has a weakness for younger women.

...Oh, uh... Any guys dating her kids can fuck her wife. Just to be fair.

//In fact, since I do need some more interactions to keep me busy...
Male characters (or futas) can have a go at Lexi's wife, Lily, under this premise. Send some interesting starters!