Now now Kumoko, is that how you talk to your mother.
...hmm, wait.
Kumo's shown absolute bias against men since forever.
She's got no father in practically every sense of the word.
Her spiritual mother - D - is female.
Her physical mother is also female. (and later on technically herself)
Her grandma is also female.
And she raised herself a baby vampire girl...who TOTALLY is attached to her even if she's a bit of a tsundere.