If there ever was pregnancy, psychosis is a possible side effect and now that its obviously past that, she seems to be returning to how she was before. However, i dont think it was pregnancy, she always seemed like a volcel. Idk how old she is but i wouldnt imagine more than 30. People tend to experience a not often talked about second puberty in their 20s. For men, another voice drop+ weight gain, for women, usually getting wider hips and a often a substantial gain in breast size, usually by 25. I wouldnt be surprised if she just got older and filled out her body more. Shes probably still a nut about yoga and hippie health shit though so i doubt its just straight up fat weight gain