have posted the backstory to this in relationships under "messy bil situation wwyd?". Basically its a horrible state of affairs. Bil has been with is new gf for less than a year. he is just divorced and has 2 dds from his marriage. his gf (or fiance, they are due to get married in the summer but that night change now) is heavily pregnant. She has 2 pre teen children who live with (separate) grandparents.
It turns out that sil has a conviction for child cruelty as when one of her dcs was a baby it was left with fractured arms and legs. SS have just caught up with her, and it looks as if the new baby will be taken into care. SS have visited pil today to fill them in on the situation, and have told them that they will also visit us, as our 2 dcs have been in contact with her. (Probably on about 5 occasions - she was invited to pils annual pre xmas family holiday, spent nye with us at pils house and attended our ds's bday party with bil and his dds plus a couple of other occasions, she was never alone with dcs, lots of other people around).
since the details have emerged we have obviously decided that we will have nothing more to do with her. pil were very keen to welcome her into the fold after bil's acrimonious divorce, they feel completely deceived.
anyway, my main q is what will the ss visit entail? Are my dc considered at risk now? Am v angry and upset by all of this.