Dog Services by May

We are a retired couple who have adopted my son's Rhodesian Ridgeback. Khaya is approximately 5 years old She is a placid and very affectionate female. We don't have pedigree papers for her. She has a sad disposition, which I think might be rectified by having a litter of puppies. She came on heat today, so we need to find a mate for her soon. It would be great to find a placid male, who could take the sad look off her face.