You shouldn't punish her at all. She has the right to date if it is ok with her parents and she really is 16 years old. It is not a brother's responsibility to punish his sister. If her parents are not okay with it, then she should't be dating but if it is, you're just going to have to deal with it the best you can.
If your sister goes with your brother then it's incest and they would both be your siblings. If a girl is dating your brother and they get married this would make her your sister-in-law.
uh, NO! They are brother and sister.
No. but they are dating.
No, they're brother and sister
Me Bryan Davis And Her Twin Sister is dating My Twin Brother Ryan Davis
Erin bieber, the one who justin's dad is dating/married to for the second time. So that his half brother/sister
yes Stella hudgens is dating Dylan efron
Yes they are still dating Actually Frank Asked Her To Marry Him Their Engaged
Maybe she would learn to behave next time.
As long as there is not a vast age difference and they are dating then no, there is nothing wrong with your sister being with your husband's brother as long as neither of them are married to someone else.
If his sister wants to meet you it is just a sign that she wants to know what kind of person her brother is dating.
no they have a brother and sister relationship