If there was one thing that she had thought about then it was how it was no coincidence that someone had come looking for her not too long after what had already happened.
The person who was following her must have had some connection to the group that tried to attack her only recently.
There was simply no other explanation for why someone was trying to find her when she was at the gym.
Ash did not know how any of them looked and their identities were just as unknown which meant that she would be unable to tell if the person behind her was one among those who tried to attack her that day.
The person behind her might have not been one of them who tried to attack her and could have just been someone they had told to look into her and report back to them.
There was no way to confirm if it was one of them or not unless she confronted the situation directly.