Hi Melissa! That's a tough one! You are sure that it is the parents of Presely's sister that she (Presley) is afraid of??? That their presence may have been the cause of her seizures? I would really hesitate introducing her to that situation again. Do you have any concrete evidence that they may have treated her harshly? I wish there were some way that you could come clean with her, and tell her your fears. Maybe you could say that for some unknown reason, Presley seems to fear them. Dogs often do have a negative reaction to people/places etc. for no known reason. Maybe you could suggest that she drop off P's sister at your house for a day at the pool for starters? And you could, on another day, spend time with your friend so she doesn't feel slighted? I'm not sure how close you are with these people. I also don't think you can avoid them forever without letting them know how you feel. I think you would feel better if you could talk about the situation with her. I hate thinking the dogs are missing out on the fun of being together; or you losing a friend! Lets see what some others think! Sandra