Как читаетсья произношения по англисскому
Because much of your sister's strange habits are about food and eating, I think she has some problems with that. Plus the fact that she locks herself In the loo (toilet) for a long time.
Let your sister know that you love her and hate to see her troubled and unhappy. Suggest to her to see a doctor on Eating ProbLems. I believe the doctor will help your sister.
Whatever your sister's problem, she needs help to realize it. Be there for her — that's what sisters are for.