Ok so first off im 16 years old.

So yesterday I took a shower, at the time I was home alone. So I was in the shower and well...I started well maturbating..So aperently my sister (who is 17) was having a sleepover (and no one told me) and my shower curtain thing is clear. So I was doing that, I opened my eyes and saw like 7 girls watching me. These girls have been known to spread rumors so i'm so embarrased, should I like tell them not to say anything or what?