Bell Jar ending

In the Bell Jar I think that the end was very lazy by Sylvia Plath. I felt as though Plath took the easy way out making what I would call a "happy ending" and a depressing book. Plath calls the book a potboiler and I agree only in the way she wrote the ending. It just seemed unlike the rest of the book to close in such a unresolved fashion. It seems like such a long shot that shock therapy would work after the first shock therapy she had. The first shock therapy leading her to not get help and then try to commit suicide. Shock therapy working is like the easy way out for Plath, and therefor the lazy ending.