Help my daughter tripped over the hoover bu accident and hit our guinea pig with it.?

we had our guinea pigs out for a run and 1 ran under a blanket in the corner my daughter didnt see her and went to get something of the side on her way she tripped over the hoover and the hoover nozzle went flying then we heared this squeak and saw the guinea pig run aross the room when i went to pick her up i saw her limping so i picked her up and didnt see anything wrong anywhere other than her leg she was holding it up so my sister had a look and she fut her finger on the bottom of the piggies foot and gently pushed up the gp didnt squeal or make any noise but she did curl her toes around my sisters finger and pushed against her finger. we put her in her cage with a fluffy blanket and her food next to her and the same with her water. i would love to be able to take her to the vet but i live on a farm in the middle of nowhere and the only vet anywhere near us is a farm vet who said he couldnt do anything 4 her because she is a rodent and he only deals with cattle ect and then made a horrid comment about her and a brick. i would drive to the vets but i have a child with a servere illness and an only be transported in an ambulance and with no one to look after her in my absence it really isnt an option so please i am very worried and really dont know what to do so any information would be great help as i really dont want to lose her because she is lovely and belongs to my son the wan with the illness so please help thank you.