Can you provide an amal or dua to help my 15yo niece stop misbehaving & attempting suicide?

My niece is about 15 years old. She is misbehaving from around 2months she talks in men’s voice and says we are 111 in number and says that we will take her. She is trying to attempt suicide by pressing neck, by jumping and by cutting by knife. Please give me some amal or dua to get rid of this or I can come to Deoband if you call.