My 8 month old puppy Is house trained, Downstairs. She pees in my daughters bed and will Poop in my others daughters floor. She knows as soon as she does it she is in trouble. I know when she comes down stairs She will sit n the couch with her ears back and have that "mommy I am sorry" look on her face.

So if she won't do it down stairs she knows to go to the door or come get me when she has to potty and she seems to know what she is doing upstairs is wrong how can I fix it?

I don't know if this is going to work... um... My retriever pees on our living room and poops on our dining room and after doing that she always get spanked! And she knows! And even how many times I thought her to poop and pee only on the garden, sadly she does not follow! So I punished her! I put her in the garden every time she poop or pee inside the house, caught in the act or not. After many times of,. barking in the garden whenever left,being spank after pooping or peeiing inside, and after always hiding after she pooped or peed inside the house soon finally my retriever learned to poop and pee outside the house only. She even stands by the door to remind me that she is going to pee or poop, well no offence but I think your pup is kind of being spoiled on you by instead of peeing and pooping outside, she still does it inside unobediently! I probably suggest that if you want your pup to change you will have to be strick to your pup right now! Remember you can't teach an old dog new tricks! (if it does not work,I'm sorry and please rate my answer)

Don't spank your dog Or scold her harshly... you don't want your dog to fear you.
Keep your dog out of the rooms that she wants to go in...

It may be a dominace issues, have her spayed if not already.
Put her on a potty scheldule and don'tr give her unlimited access to the entire house, keep her with you until she has learned that she just can't poo and pee everywhere. Read the following link it should help you... but no spanking.
https://www.askmehelpdesk.com/dogs/information-articles-our-dogs-expert-labman-53153.html

I just read a solution for dogs that consistently pee and poop in places they shouldn't - like on the owner's pillow. It was in a book by ekerson (sp?) who has a famous radio show for pets. He said to divide their food into parts, and using paper plates, to put the plates wherever it is they poop in addition to their normal eating place (i.e. 3 bad places, food divided into 4 parts). Even after they've finished eating you leave the plates in their spots. Then you are supposed to keep doing that for quite awhile, even a few months in very severe cases, and then test to see if it happens again when the plates aren't there. The idea is that a dog will not poop or pee where it eats. I would rather have plates on the bed than pee on my body. It's not a bad idea!