I can confirm my mother has no idea what these ticks mean. She can't make the difference between WhatsApp and iMessage either. At the time I left, I told her so

I can confirm my mother has no idea what these ticks mean. She can't make the difference between WhatsApp and iMessage either. At the time I left, I told her so and she kept wondering why I was not getting some of her messages (the ones she was sending on WhatsApp, that is).