I don't know if this will help you, but my 11mth old doesn't go down till 8-830pm. We do dinner at 6pm, bath at around 7 then we dim the lights and read a story or two then its milk and bed! Sometimes she feeds to sleep, other times she's awake and we have a cuddle then I put her down and stay in her room for a few minutes and she's usually asleep!
Hope it gets easier for you, hang in there - I guess it could take her a while to settle in to her new home.