From what I remember there was this little brunette girl in it and her neighbor was a teenage blonde girl. The blonde girl ends up getting pregnant and gets sent off to a place for pregnant teens.
The little brunette girl was at a birthday party and they were playing spin the bottle and the girl ended up getting a frog put in her mouth and she ran out of the house and he started throwing up on the lawn and I think that is when she saw the blonde teenager

That Night (1992) (http://www.imdb.com/title/tt0105572/)