Dilemma: How to Deal with Crazy Parent

Let me pose the scenario: There's an elementary school variety show being put on. I'm running sound and am messing with the projector near the 5th row or so about 30 minutes prior to the start of the show. I notice a lady getting very worked up. Oh wait, now she's screaming. She is YELLING at the top of her lungs about how people have saved seats with their coats, and how the heck can this happen, and how early does she have to get here to expect to be able to sit down, and "I absolutely have the right to be upset right now!!!!"

She lost it. Raised a big stink about it. In reality, she was trying to get not just any seat, but multiple seats for all the people with her, and seats in the 2nd or 3rd row. Never mind the other 1,000 seats the auditorium holds.

Fortunately, I didn't have to handle this situation. But I wonder...What's the right way to handle this?

I'm split exactly 50/50. One half of me wants to say to her, "Honestly, Lady, this is an elementary school variety show. Not U2. Oh, and it's free. Oh, and there are literally hundreds of other places to sit, and oh, it's not the end of the world if you have to sit near the back. Tons of other people have to sit there too. If you get stressed about something like this, I'd hate to see you when something actually terrible happens." I wouldn't want to be mean, exactly, but...to cater to her feels like I'd be reinforcing this crazy sense of entitlement she has.

The other half of me says it's not worth it--just calm her down and find a way to get her some seats and pacify her, even if it means asking some other people to move down. Situation easily diffused.

What do you think? What do you do?