There’s a big thread here where people shared methods that actually worked for them:
My advice based on what I’ve seen is AVOID King Paimon, he’s a great tutor but he seems to get a lot of requests for this and he’ll basically agree, hoping to actually teach you advanced magick along the way, but he’s not the fastest and I don’t think he really enjoys the work.
Best bet if there are kids involved IMO is to approach the goddess Hathor, she carses about familiers and children, and happiness, and she won’t go round harming anyone who doesn’t deserve it. But I had no success with this kind of magick (which in retrospect was a GOOD thing, given that I used to fall for unsuitable men!) so my advice is based on knwoledge of her interests rather than first-hand success in this area. 