We have always had good luck with a scent article (can you tell we do search and rescue work??  LOL).   
with Fergus, I left a used sock with my breeder for 3 weeks, and he played and slept with it (not as gross as it sounds). When I picked him up he was mine all mine.   
Same breeder, sold me a dog for my Father.  We were going to give it to him, but I had to keep Callum with me for 3 weeks first.  I stole an undershirt out of my parents laundry hamper, put it in Callums crate and he slept with my father's scent for weeks.  Even though he cuddled with me, he is ALL Dad's dog now.   
Try sending her a piece of worn clothing.  I promise this works.     
				__________________  -------------------------------- Kate-Mom to:   Dante, Hamish & Fergus     |