"Left without having treatment "

I went to UTC to see the doctor for my child. I also had my little one with me as I have nowhere else to leave her. The two year old ran in the corridor and one of the receptionist told me that she’s not allowed, it’s dangerous, she could spread the disease. She wasn’t the sick one and she wasn’t running the whole time. Unfortunately the waiting area was so small and there was literally no space left for us to wait. No toys or anything was on display either in the children’s area. I had snacks and other stuff but she just wanted to explore this new area and I couldn’t stop her even though I tried. I wanted to say to the receptionist try saying this to a two year old and see if she understands. I’m normally a strong person but having a sick child with no sleep and a baby who’s tired and bored of waiting I felt terrible for being told off. So we left without seeing the doctor as I didn’t want to confront the receptionist again.