I want to cry in front my parents

My parents are here in Noida for few days. And, Kanika showed her real colors again. Not a single time, that she showed her behavior in front of them. She kept her close in her room. She came out only at the time of food preparation. Always scolding kids.

Today, parents said they will go on Friday. I wanted to cry in front of them, asking for help. That, please save me from Kanika. I do not want to live with her. I can not tolerate her. Why did you forced me to marry at such a small age. Why you never asked, how I'm living with her. They know her behavior problem. 

I'm feeling so helpless sometimes. I generally avoid toxic people in life, whether in office or outside. I do not entertain them much. But, how can I escape from a person with whom I'm living in a house. 

I never ever forced her to do anything. She always forced things, her taunts kills me from inside.