HUGS to you Lorelei Lee! Sorry your perfect little sleeper went away - hopefully you can coax her out again!
My DS was sleeping in the living room - but I found that no matter when I put him down he wouldn't fall asleep till it was dark. By then he was overtired and would SCREAM till I nursed him to sleep. So I went to buy some room darkening curtains but the didn't fit
SO....instead I sterilized our second bathroom and made it into his bedroom - no windows, black as night and he's been sleeping pretty good - not perfect but it's only been a few nights.
I highly recommend getting some room darkening curtains or shades - if there is daylight, your DD may have a hard time falling asleep.
By they way...how old is your LO?
Good luck with sleep training and starting on EASY - let us know how it goes!
~Jaci