I dont know about your state hon, but in mine, you need classes, background checks, abuse checks, police checks, and basically the foster system where I live at now keeps a very close eye on the 'child' who is in a foster home.
ALSO, a child is no longer allowed in the system longer than 18 months, with the foster families given the option to adopt first. or family members. AND the child must agree with that adoption if they like them or not. {Which is gr8 news}
SO as disgusting as this was for you...and believe me it is disgusting...
it not the norm now.
Foster care systems where I live are very careful and extremely cautious and the child is questioned about how they are treated in the home.
And perhaps outcries from folks like you, the system needed an overhaul desperately.
I am sorry beyond words about this treatment, and offer you HUGE hugs if I could personally give them I would.
Altho, now we have cleaned up the foster care...we should look forward to keeping it clean for all aspects of the child.
Both to remove physical harm and spiritual.
Peace to you.