Should I inform my ex-father in law that his underage daughter is drinking?

[Sweetpea has two boys]

My husband and i are in the middle of a divorce, but i am still on good terms with my father in law. i found a post on my 17 year old sister in law;s facebook wall that mentioned her and her friends getting very drunk.

should I tip my father in law off that his daughter is drinking, and getting in a car with other drunk kids? i don't want to be a tattle tale, but its dangerous behavior, and I know my father in law opposes drinking period.

[Linds]

Hard to say given the divorce and everything, since they're driving and getting in cars someone should be told. It would be one thing if they were staying at someones house and no one was leaving, but driving while having drunk is never a good combo.

[Alexa Sortizza]

Maybe you should first speak with her then him. God forbid an accident happens which I know many people who have been in situations becauae of drinking.

[George Costanza]

In my opinion you shouldnt. Let her make her own mistakes, on the other hand if the driver was drinking it can be life threatening. but he is your EX father in law. It would be best to keep quiet.

[adkjflsdfkljklsdfj]

No. Not your problem and nothing good will come out of it. She will hate you forever and he will be bugged that you told him and go into denial about it. DON'T DO IT!

[Sarah Courtney]

Ya I think u should just drop a little hint and b like did u know about this. Or ask if she is like grounded for life and he'll ask y and then b like o u didn't know! And tell him

[CurlySue]

Reporting dangerous behavior is not a tattletale. It is definitely a concern that should be reported to her father, since he's legally still responsible for his daughter. Whatever problems she gets into or causes, it's going to fall on him to fix. He needs the heads up.

Edit:
Your divorce is a completely separate issue when it comes to doing the right thing about your sister-in-law.

[Angelic Buchanan]

I feel you should tell him. But i do agree on talking to her first and explaining the unexceptable behavior. You should tell your father in law though because there are so many accidents with drunk drivers and maybe his punishment is just what she needs. You dont want her ruining her life!

[candycane]

If it was my daughter, I would want to know that this was going on. Wouldn't you want to know about it if it was your daughter?

[Drew]

If you were a parent of a teenager, wouldn't you hope that there was a responsible adult who cared enough and was bold enough to inform you that your teenage child was drinking and being driven by other drunk teenagers? If you don't want to handle it in the simple "snitch" fashion, then you could get proof, like printing the posts, then confront her yourself and offer her the chance to tell her father herself before you tell him.--"Sally, I'm very concerned about you. I saw some posts on your wall about you drinking and being driven by other drunk kids. As a responsible adult, I feel obliged to inform your father of this behavior. I want to give you a chance to do the responsible thing and tell him yourself, so here's what I'm going to do. In 3 days, I'm going to go to your father and show him the posts about your partying. As someone who cares about you, I can advise you that it will demonstrate a great deal of maturity if you come forward yourself, beforehand." She might resent you for it but you'll have done the right thing.