Notary signing

Two days ago I had to get a re-occupancy disclosure signed and notarized by the buyer. I represent the seller but was told from the buyers agent he is in Ft Lauderdale and I am closer to his client so I can do his work for him. Wanting to get the deal done I had my assistant meet with the buyer who we have never meet. The first thing out of my secretary's mouth was let me see your license. The person who said she was the buyer up until that point said I am her sister but I will sign for her. My assistant proceeded to explain why that could not be done (thank God for a great assistant, pretty too) and the buyers sister said I sign everything for my sister. To make a long story short the buyer came in Tuesday after 5 PM my assistant waited for her and had the notary wait around as well. As far as the other agent he is a BONE HEAD who doesn't want to do his JOB.