yellow wallpaper

So today in class we learned about a story called "The yellow wallpaper" I think that's what it's called but anyway, the story was about this couple that moved into a house together, the husband thinks his wife is "sick" so he locks her up in this room away from everyone including their baby, and she starts to obsess about the wallpaper, saying she see's a women or women and the only way to free herself is by ripping the wallpaper off of the wall, by the end of the story it is suggested that either a) she hung herself and when her husband discovered her he fainted and her spirit floated over him constantly or b) he discovered her ripping the wallpaper off of the wall, fainted and she stepped over him repeatedly still ripping the paper off the wall. Either way the story ended with a type of cliffhanger not really giving the reader any extra info just kind of letting the imagination run wild, although stories like this are easy to talk about in class or write an essay giving different ending ideas, I would have liked to know what the story really was about.