Low Cost Pet Euthanasia Services?

I am glad to have found this community. I am hoping someone will able to help me. I'm looking for a vet or a place were I can take loyal friend and companion, my baby girl, Gypsy. She has been with me 13 years and together we have been through many things. She is a miniature American Eskimo and has had issues with her hair falling out, with scabs and a smell. She has severe arthritis and her back legs just don't give anymore. It's so painful. I am having to pick her up carry her outside for her to relieve herself.

She is not active and just wants to sleep. She does not get up to eat sometimes and she is falling down over and over. I can't even cut her nails because of how much it hurts her. The vet I have says as long as they can help the pain they don't believe in putting her down.

Her hair is falling out more and more. I brushed it and it filled half of a trash bag. I love her dearly and I just can't see her like this anymore. I got her when she was 5 weeks old. I live in the San Fernando Valley. Can someone can tell me were they can put her to sleep and take away her pain. It must be for a low income pet owner. I would like to get some of her ashes. I would appreciate any information. I'm so sad, but I would be selfish just giving her medication for pain when in reality I know her health will just degenerate with time. Thank you.