i was given a puppy from a abused case i took her to the vet and she has gotten all of her shots but recently after her last set of shots?

When she plays or tuns with r other dogs she will stop and start whaling and u have to rub her leg it happens every 3 to 4 days or more often I called the vet said it's not broke there's nothing he can do she has came a long way since we got her when we first got here she was a scared little dog now she is affectionate just still a bit scared of all men other than my dad the people we got her of had a oops litter she is a mini greyhound mini collie retriever she is small they gave her to people they brought her back after a few weeks they got her vaccinated all but her last set of shots which I got for her from vet but the people that brought her back must of abused her in some way is it anixity that her legs do this please tell me why she will start whaling and u have to rub here legs or when are boxer licks her she will stop she does this also when not one moves her I have had many fogs and 5 currently and never had a dog do this any advice is welcome just not insults please my male dog is fixed and the rest are females So don't hate saying five is to many it's five counting puppy they are all vaccinated my old male dog is 11 Years old with half a lung and heart murmur then are other little dog has a matalism issue 2 years old are boxer is healthy and is 3 years old and and are other little dog gets small tumors on her lymphnodes that she gets shots to dissolve 9years old So don't hate do u have a solution to.the puppy whaling issue t my boxer other dog licks her I rub her