What can I do about my spouse's manager being unprofessional?

My girlfriend is too “nice” and people-pleasing, so even though she doesn’t like what’s going on, she would never stick up for herself.

Her manager has been WAY out of line ever since Solanda (the manager) found out that Erica (my girlfriend) is a lesbian. Her first comment was “Oh, I’m surprised you didn’t hit on me!”, then the following days continued with comments like “Doesn’t your girlfriend get mad that you have two cats?” and pointed down between her legs.

Now, today, Erica had a vacation day scheduled. She was unaware, though Solanda was WELL aware… and when there were thirty minutes left of Erica’s shift, Solanda told her that today was her vacation day, that she knew about it all day long, and “You better buy me a christmas card”.

What can I do about this? Because I’m about to call that bitch in the morning and go the fuck off on her.