What would you do?

Let's give a scenario.

Say you are at a party with friends and family. There are about 40-50 people there. You know a lot of them, but not all.

Party is going great. There are four people in the hot tub, three women and one man. The women are in bathing suits or just bar and underwear. The man is in regular shorts. Someone outside the hottub talking finds a mostly empty container that had cocain in it.

Your mom gets pissed. No one in the hot tub will confess.

Now you walk in and without knowing the back story are just told to make sure the one girl leaves. You don't know this girl (she is a friend of a family friend you have known for 20 years or so) you only know that your mom believes it is hers.

Then you find out that she was in the hottub in her bra and underwear and that the only reason your mom thinks it is this girls is because the other three in the hottub got together and told your mom it belonged to the girl.

Would you stand up to your mom for a girl you do not know or would you sit quietly by while an innocent girl is persecuted?

I know what I did, I'm just curious as to what others would do.