Pacifica's older sister (Gravity falls fanfic)

Pacifica's older sister Molly Northwest. Who is 13 turning fourteen had ran away when she was 8 from her mean, vicious and cruel parents. Molly was half angel, human, and demon. She had a bond powerful with her sister that it lets her know when her sister was in danger or something was wrong. So 6 years later she went back to the Mansion to protect her little sister. Molly is sweet, nice, caring, a little nerdy, cool, and mostly confident but at specific times she can be a little Shy. But whenever it comes to Molly facing her parents she's reblious against them. Lush almost every time she's seen by a boy they immediately start crushing on her, which always annoyed her, but life is life. And life will get interesting now that she's returned