Was I in the wrong to try to call 911?

Hello. I am just a recent nursing graduate and I am just wondering if anybody can help me out with this problem I am having.

So I am doing a show that involves a lot of people. During rehearsal, I heard a young girl scream for help because someone was having a seizure. I immediately rushed to the area where the girl was and her friends said she fell and she also hit her head. I started calling 911 and the director told me to not call because it was at her mother's discretion. So I hung up. The "seizure" lasted about 3 minutes. One of the kids that knew her told me that she faked having seizures in elementary school and had this mental disorder where she fakes illnesses in order to seek attention. Was I in the wrong to try to call 911? I have no clue if the director knew she had the disorder. The reason I tried to call is that she could have injured herself by hitting her head and so there are no liabilities. Another thing that bothered me was that there are two RNs in the show and they were **** talking about the girl for faking the seizure and that they counted how long she was in the seizure for and there was no way she was really having a seizure for 3 minutes. My issues are 1. The nurses were no where in sight when it happened. 2. Seizures can be for 3 minutes(I thought so) and 3. God show a little empathy; if the girl has a serious mental disorder don't make fun of her. I have seen someone faking a seizure before in a hospital but I was able to pick up she was faking it, but this one looked real.