daughter no go to bed

Lately, my almost 3-year-old daughter has trouble going to bed at night. She has suddenly become terrified of the dark. I am sure it has nothing to do with me telling her that if she gets out of bed one more time, the monster in the closet will bite all of her toes off and feed them to the dogs. She has recently become terrified of dogs as well. We are thinking about taking her to a therapist to help her work through these fears....actually, I am just kidding about everything but the not going to bed and scared of the dark parts. We put her to bed around 9PM and she will play in her room, play with dolls in her bed, come give us multiple hugs and kisses good night, ask for more milk, ask to watch a movie, tell us she needs a stuffed animal that is probably at the very bottom of her toy box, etc. Sometimes around 11PM I try to turn off the hall light to save electricity, and I always hear a "Hey! Turn on the light!" Sometimes, when I am really fed up with it, I turn off the hall light and shut her door so she cannot see to play. She cries, but once I leave, she pushes her rocking chair out into the hallway, or takes her dollhouse out there, and stands on it to turn the light back on. Sometimes she has an excuse, like a late nap. However, most of the time she just likes to stay up.