Well depending on what your budget is like you could have someone come to your home so that your dog is most comfortable in her last moments(expensive) or you can go into your vet and they will be able to handle it in office. It's very peaceful either way you choose and most vets will give you a moment to spend with them before your final goodbye.
Thank you for contacting spcaLA. We are so sorry to hear this. spcaLA does not offer euthanasia services to the public. The local guide who commented on this post said it best. Best wishes to you during this difficult time.
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