For my blind followers

This causes almost physical pain

What did she say/type in sign language?

It's....it's really not....that's not how sign language works....

She could've said deaf friends

From what I understand, it is more about motion of signs than static ones. Looking past the obvious idiocy.

They should tell her sign language is for deaf

Calm down, people. It's just a joke.
Even if people are deaf, they'd read words just the same.