FALLACY QUESTION : 1. Sheena has been reporting intractable insomnia since 1999. A warm glass of milk before going to bed should end the problem for her. After all, it helps others to sleep well.

QUESTION:

1.Sheena has been reporting intractable insomnia since 1999. A warm glass of milk before going to bed should end the problem for her. After all, it helps others to sleep well.

what kind of fallacy is this?

im not sure if its sweeping generalization, hasty generalization or fallacy of false cause .