Six weeks is really young to be taken from mom and the rest of the litter. Is it possible to get a t-shirt or blanket from the previous litter owner that will have the litter scent on it. The baby needs security and that's just what you have, a little tiny baby. She still has to learn to play. She would have learned that from her littermates if left with them. Gently for now just practice rubbing her all over, touching each foot, opening her mouth and touching her tiny teeth. Look in her ears regularly. On the feet spread each toe very gently and look at the nails. Do all this on a regular basis and she will be a dream to take to the vet when the time comes. As for teaching her to play, maybe try dragging a toy across in front of her slowly to see if she has any interest. When beginning potty training and she is successful going outside really praise her in a happy happy voice. In a couple weeks you could start some minor clicker training. Try different toys to see what she likes best.Some like balls best some like the toys (without stuffing) to play with.
Snake Vom Eselspfad RN CGC (AKA Raina) 3/5/08
Pyrate CGC 4/1/03-5/16/12 RIP
Too many to list waiting at the bridge but remembering them all