Avoid eye contact. Hold her if, you need to. If not hungry, nor in need of a diaper change. Placing her, back in her crib bed, will show that it's bedtime. I agree with dimmed room, no stimulation, such as tv or the likes.

I mentioned avoid eye contact, because, to do that, shows, that you are there, but it's not attention time. Is the bed, in the same room, as you? Have you tried, putting her back, to bed and quietly going to bed, yourself?

Is she crying, or just alert?