Classics You Can't Stand?

I rate it highly, but I understand where you are coming from. Try not treating it as a "feel-good" movie about a cute adorable girl, but as a study of a girl with serious psychological issues (and there are many clues to this in the discussion of her childhood within the film), who is a possible danger to herself and others through her compulsive meddling and who should be undergoing a course of therapy. I think she is not so far gone that that would not work, but, worse case, Nurse Ratchet would know how to deal with her.

I recommend A Very Long Engagement (2004) dir: Jean-Pierre Jeunet.  Same director and female lead, and again she is regarded as a bit cracked by her friends and family, but here it is because of her obsessive love for her boyfriend, missing and presumed dead in WWI. It is one of my favorite movies of the new millenium.