The husband says my cousin will cry out of the blue and she sometimes punches herself. When her husband is leaving for work, she's gonna start crying then she will tell him not to leave. So the husband got scared and decided they should live in my cousin's parents' house for a while.

My aunt(cousins mom) and her mom are also like that. So i guess its hereditary. My mom would usually go with my aunt to the hospital to have a check up because she thinks she's sick and is hurting somewhere. The doctors say that nothing's wrong with her and my aunt would insist that her head and neck hurt so the doctor would just give her pain relievers. Then one doctor said that her "sickness" is only in her mind. So i suggested that my aunt should go try and see my therapist. But i think she doesnt want it.

Now that my cousin is in her mom's house, she was always in her bed and she sometimes complain how her head and stomach hurts. She's also lazy of taking a shower. They didnt go to a hospital yet to check if there's something wrong with her because its just the same with her mom. But i think hers is worse because she starts hurting herself. My uncle even joked about having two patients in his house. Imagine being in the situation of my uncle. And now as im typing this, my cousin is crying for i-dont-know reason.

Please help me how to persuade my cousin to see a psychiatrist. If something isnt clear, please feel free to ask. And also, what do you think is this? And why is this happening.