Caras owners (previously Sheena) unfortunately were working full time so felt that they could not give her the time and exercise she needed.
She was with them from a 6 week old puppy and their children loved her (hence great with children).
They made a very diffucult, but wise, decision by rehoming her as she is with a fantastic family now and being loved to death (and getting plenty of exercise!) 
Cara is reserved to her foster family 