[PC] [2012] Flat animation Nightmare fighting game with little girl

This game has haunted me for years

\[Platform\] - PC

\[Genre\]- puzzle/ fighting

\[Estimated year\] - pre 2012

\[Style\] - 2d stylized

\[Notable characters\] - little girl with brown hair, black nightmares

\[Notable game mechanics\] - side scroll, gathering keys/souls, ASDW control

\[Details\]- I played this game in about 2011/2012 but I have no idea how old it is. The game starts off we say little girl with long brown hair and a white nightgown going to bed, but she slips into this nightmare realm. She's in a 2D almost painting of a forest (I can't remember if it actually moved as she moved) And she has to fight these black gooey smoky nightmare monster things. Once you defeated them you could either gain these little balls of light or a key (My memories foggy on that one). When you completed a level it cut to a screen of her moving forward on a tile getting closer to her bed. Everything was very black and purple with red highlights for contrast. I played this game on either Facebook or a flash game site and I absolutely cannot remember which.