Strange New Experience

So I was recommending some beginning chapter books to a mom for her second grader. We were out browsing the stacks, but I couldn't remember the author of a new series and ran back to my computer to look it up. While I was there, another mom asked where the summer reading materials were. I directed her to them on my way back to the stacks and went to find the series I wanted. I turned around and gave them to the first mom, but the second mom had followed me and asked if she could have some of the books too. As I tried to continue my conversation with the first mom, the second one interrupted me to ask for more recommendations and tried to highjack the transaction. I tried to politely answer her questions while letting her know I was still talking to the other woman, but she stalked us and eavesdropped until we were done.