Guess they didn't make it in time

... Yeah, you keep telling yourself that...

To be fair it looks for plausible for a nosebleed. If you look at the blood it seems to have dropped from a vertical position, whereas if a woman were to suddenly have her period start it's far more likely it would have dripped down the leg first and pooled more as opposed to being a drop.

My thoughts exactly.

It really seems like a nosebleed

They could have had a nosebleed just as they were about to pick up some personal affects?

A small tampon would fit your nose perfectly. Hence the choice