friend help!

this is a tough one talk to your friend about what happened between her and your little sis tell her it upset Ты as for your other Друзья did they see anything if not Ты have 2 options Ты can not tell them anything though i wouldn't because they might know something is up and make things out worse than they are или talk to them about what happened Ты don't necessarly have to turn them against her just tell them what happened and if Ты can work it out with your friend. I had Друзья that messed with my sis and i told them i would not tolerate it and that nothing was еще important to me than my sister and they apologized and moved on anyway this is what i would do sorry this is a hard one hope what i сказал(-а) helps at least a little and wish Ты the best of luck hope everything works out for you