FOUND A GERMAN SHEPHERD, PLEASE HELP ME FIND HER OWNERS

Tonight I found a german shepherd wondering around near my house in Catral. She was exhausted, starving and thirsty. I think she is about 9 months to a year old. She is very timid but intelligent! Its possible she may have had puppies already as she looks like her milk has dried up. She has an old worn white flea collar and a brown leather collar. The brown collar used to have studded shapes on it but they have all fallen off apart from one silver metal diamond. She is a beautiful dog..with no name. Does anyone know who she belongs to??? I will be contacting SATS and NUHUN in the morning. I think she has Spanish owners as she did not understand any commands..but she is really clever and has already mastered sit! She also has already defended my husband when she heard some strange noises by jumping in front of him and growling in to the dark. A very good guard dog. Please help me find her owners or a good home. I can not keep her as I already have 2 rescue dogs and 6 rescue cats.