Here is the extra information she gave me:
I took it to the dealership and their diagnostic test showed a TCM issue. They reset it ( I think that’s that they called it) and said if that didn’t work they would have to replace the TCM. It’s been fine for a couple of weeks but the light came on last night. All of the gears (P,N,R,D) were flashing and all light up and I could hardly get the car to move.