
i like you would feel very sorry for the bitch, it certainly isnt acceptable under any circumstances to breed her again 4 months later after having 8 puppies!!!
as she has only 2 weeks to go there isnt anything that can be done now, just some STRONG words of advice to your friends, obviously accidents do happen but next time maybe they should arrange for a friend or family member to look after the male when the bitch comes into season if the kids let the dogs get together otherwise this poor bitch could be pregnant every 4 months!
unless both these dogs are great examples of their breed (if they are pedigree) and health checked she should be advised to spay the girl anyway.
sadly you can only advise and hope they listen to you, good luck :)
i hope everything goes ok for this poor girl