You should go back to whoever is in charge of this and complain. I would outright refuse to come in and work until the problem is fixed. If they won't help, I'd go higher up. No one should suffer emotional abuse at work, them putting you in a situation where they know you'll suffer abuse and harassment is unacceptable. They are obligated to accommodate this as it puts your wellbeing at risk and creates a hostile work environment. Not to mention it alienates customers since she does it in front of them.

Why does a person who does things like that in front of customers even still have a job there? Complain and go up the chain until they don't put you up with her anymore.