What napping does she do during the day some children need less at 2 year old, perhaps cut it back or out, make sure she gets enough physical exercise and fun during the day, put her to bed in her own crib or bed after some stories, no milk before bed this can keep them awake. Once you know she is okay leave her and if she yells ignore it, maybe you are feeding into the problem by going into her so that she knows if she yells it gets you into her room. Put her to bed leave the room.you cam leave the door open maybe a low light on in the hall.