Your actually very lucky (besides sick puppy) due to the california puppy lemon law. Not many states even have them but CA is one, if not the best!!
California Lemon Laws for Dogs
Forget the BBB right now, and other reporting agencies and get the letter along with the pups vet report, and get it to her NOW. Mail it certified so she has to sign for it, also email her and CC yourself and another person you know.
I cannot find out who your supposed to get to enforce the lemon law but I would guess probably animal control.. Call them and make a report now as well, do not wait another minute. If she is also a USDA breeder, contact them as well.
Personally I would not keep the puppy. I would return it and enforce the lemon laws on her, get a full refund plus what she has to pay for the vet fee's. You may think keeping the puppy is saving it, but I think keeping it is going to be a hardship on you and your family. The puppy as well. The treatments for mange are long and time consuming to say the least.
Get your money back and then come here for help on finding a reputable breeder in your area. I KNOW there are many good ones in CA. You can also get a sick puppy from a small in home breeder too so you cannot go by that alone.
I went through heck with Pennie when I got her and I got her from a small in home/hobby breeder!! Pennie had giardia and it took 4 weeks to find that out because it is hard to see even at a lab. so you have to take stool in every other week for 3 weeks (3 tests) if the first 2 do not show anything. After the 3rd negative then that means they don't have it. Pennie showed positive with the 2nd stool giardia test.
She was sick from day 2. It started with her not wanting to eat, then not eating at all. I had to force feed her with a syringe for 5 weeks. It was horrible because she kept having hypoglycemia attacks, I had to feed her every 2 hours. She was 1.7 pounds the first day, I took her to my vet before I even went home with her.
She was a little thin. also she was 8 weeks old. I didn't know any better, and I should have, that these little pups need to stay with mom at least until 12 weeks. I would never have gotten a pup from her had I known this. Now of course I know and that will never happen again!
I noticed flaky skin when I picked her up and I kinda had a feeling it was skin mites (AKA walking dandruff).. And yep she had them. I think I would rather have fleas... I hate these things cus they always feed on ME...lol It seems like almost every pup I have bought has had them.
She had a BAD case of them and it took me 2 treatments to get rid of them. Then it took weeks to get rid of the flakes. And she lost a lot of hair. So by the time she was 4 months she had no hair on her chest and front legs and all the other hair was very sparse.
It is starting to grown back in, but it is going to take a long time because she lost so much.
Once she got on the meds for giardia within 12 days she was up walking around, 3rd day she was actually playing, never done that before. And by the 5th day (final day of treatment) she had done a complete 180. And now she eats like a piggy;)
I spent 1100.00 for her, and then another $1,000.00 on vet, tests, and special food. I got NOTHING back. She refused to give me my money back, went against her own contract/guarantee.
There is nothing I can do in WA state, we have NO lemon laws for puppies here. I could have taken her to small claims court and probably would have won but I just didn't want to mess with it. And the other thing, report her to animal control (they deal will all breeders and animal issues here). The just would have went out and checked out the dogs and place. But you cannot always tell if a pup is sick right away.
I am sorry I went on and on.. I have been scr*wed a few times buying dogs. Those were from breeders in other states. Now I only buy from local people I now know and trust, and if I were to have one shipped it would also be from someone I know very well. I know a lot more now then I did when I first started breeding 8 years ago. This local breeder looked great, had good record. The only red flag for me was the age of the pup being sold, and I didn't see the flag then.
Even with a contract in CA it has to go with what the lemon laws are or it's worth nothing.. Do you have one from her?