I understand that the momma of this puppy died

BUT whomever bred the female who passed away should have fully understood the consequences of breeding and with that comes the responsibility to be surrogate mom in the event of a dog's death. This responsibility would include raising and taking care of any puppies if something were to happen until they are an appropriate age to go to their new homes~which is
NEVER 6 weeks old for a puppy let alone a Yorkie puppy. Whether or not this is the answer that you are looking for, it is the answer that you will receive.
I'm wondering if there are litter mates to this puppy and where they are going. This situation is beyond heartbreaking and seems to be happening more and more with irresponsible pet owners breeding because they feel it is their right.