Am I a bad person...? Please help?

Well, my Dad almost drowned today..me my sister and him were having a swimming competition. We started to swim, and about halfway through I stopped to take a rest, so I sat on the edge of the pool. My sister reached the other side, but my Dad was stopping to take breaths (he is an okay swimmer, but not great) and because he doesn't know how to float, he started drowning. My sister, who is a great swimmer, tried to save him by pulling him up, but he was pulling her up too, because he obviously didn't want her to drown. While all of this was happing (It was for about 2 minutes) i sat on the edge of the pool staring at them. Does this mean i am a bad person, because i didn't do anything to help them? Well, I eventually came back to reality, and grabbed the end of the pool net : a href="http://img514.imageshack.us/i/69382421260x26000oceanb.jpg/" rel="nofollow"http://img514.imageshack.us/i/6938242126…/a and saved them both. When we all recovered, we started to talk about the incident. My sister said it was like I wanted him to drown, because it took me so long to react. Is that true? Was it my subconscious or something telling me that I really wanted him to drown? Please help me