looking for a story.

Story by phoenix

Hi. i recently lost all my bookmarks and I'm looking for story i cant seem to find anymore.

It involves a girl who recently broke up with her boyfriend because her vagina is to tight or small? Her older sister is a futa possibly amazon futa. They end up having sex and her younger sisters body changes and becomes voluptuous. After that a relationship starts that eventually involves the mother cheating on her husband with the daughter. 

I remember it being a few chapter long.

i found a futascript that is kinda similiar but different.

Any help would be appreciated.