Food truck worker films his female coworker to prove to his girlfriend that he's not near her, boss tells the female employee that it's her problem to fix

Can she not trust him to go to work without looking at her on FaceTime the whole day? 

Have you ever had a boyfriend or girlfriend who didn't trust you, and it subsequently ruined your relationship? You couldn't go to your mom's house or hang out with your friends without them constantly texting you, asking where you are and who you're with, and not believing you when you tell them. They might have been this way because they had an ex who cheated on them, but that's not an excuse for being clingy and possessive of your partner 24 hours a day, seven days a week. If you can't trust that your boyfriend won't cheat on you when he's at work, maybe it's time for you two to break up. There's a big difference between somebody who can tell that their partner is probably cheating on them (they randomly start staying at work late, they're hiding things on their phone, and they're going on vacations without their partner) and somebody who thinks that their boyfriend being in proximity to another woman is tantamount to cheating. 

It's really difficult to be in proximity to somebody in the middle of this situation. If your coworker's boyfriend is storming into your workplace and accusing you of getting with his girlfriend, you're in a dangerous workplace situation. The woman in this story is really uncomfortable with her coworker filming her to send to his girlfriend, but her boss, who is also her brother, won't do anything about it.