A.M.
hi C.,
Have you tried using a noise maker or one of those ceiling image projectors? My daughter is 3 and still hits the button on the Ocean Wonders Aquarium on her bed when she wakes in the middle of the night. It soothes her back to sleep. She also has a bear that ligths up different colors so if she opens her eyes and finds it's too dark she has a way to create light (soft, soothing light). I agree that blackout shades and a very dim or no nightlight can help. These things help them feel like they have some control over their environment so they don't feel "abandoned". Their crib should be a safe haven!
Start her routine earlier and read an extra book or two for now until she gets used to the time difference. Remember, she can't tell time. It's all about the routine.
I don't know if this is anybody's "method" but I suggest starting with 5, then 10, them 15 minutes - adding 5 minutes each time you go in. At five, hug her and cuddle her and talk to her. At ten don't pick her up, just talk and get her back to laying down and rub her back a moment and leave. At 15+, no talking, just smile and calmly lay her back down, cover up and leave. My daughter was younger but after 3 nights - one went to 15, one 10 and one 5 - she was fine. We never have to go in more than once since then and it's usually justified (an extra trip to the potty or request for another book to read because she's not tired enough to sleep yet, etc).
Good luck!