ParodyGirl
This is not how "D" would react, she is so bored that any abnormality she finds will find her interesting and will help him shine to give her the fun she wants, kumoko aKa Shiraori was one of those abnormalities, so with our protagonist yes she would help him become stronger, give him information, or being more extreme, give him a quest to be a demon king to fight heroes or something similar. There is no way she would be antagonistic, unless you harassed or annoyed her in some way, but that is impossible for our Mc, since that annoyance is for the other gods.