OMG!! I am soo sorry you baby got hurt! Poor little thing! I cant belive they where not watching her closes enough to make sure your baby would not get hurt. and how can she fall down the stairs?? Even when my girls where learning how to go up and down them,they never feel. story sounds fishy to me. Hope he at lest paid for the bill.. thats at lest he could do, scent he hurt you poor baby.
I am glade she is safe and sound an home with you. Poor things Hope she and you feels better soon.