Lovely, young Pyrenees Mix showed up at my house. Gorgeous and incredibly smart. I have tried desperately to find her owners but have come to the conclusion that she has been dumped

I already have 5 large dogs of my own and although I am in love with her, keeping her is just not possible for me. I'm thinking she is probably about a year old. She loves to play and is extremely affectionate.
She gets along very well with other dogs, cats and she doesn't even bother my ducks. She loves lying in the field with my horses!! She would make someone a fabulous companion. I have not had her evaluated by my vet yet but plan on doing it within the week. So I'm not sure if she has been spayed or not. She has been started on heartworm preventative and I gave her Frontline as soon as she showed up because she was covered in ticks.
Having no luck uploading a pic

Keep getting an error!!