I know this is quite an old post, I see you've already had some good advice, but if you're still having problems, this is what we did.
I found one of the most important things was letting everything in your house slow/quieten down, lights down, TV down, less movement, no toys, speak softly or not at all etc. At this age their brains are in super hyper I want to play, learn and discover mode, so you need to calm all of this down. When she is waking in the night this is exactly what she wants to do, her brain wants to wake up and carry on as before. I found that when taking her to bed, laying beside her, holding her hand and letting her stroke my hair helped a lot. I didn't speak or look at her, just did a few gentle 'ssshhh' sounds now and again. If she woke in the night I'd do the same again, not talking, no eye contact, low lights, just lay down beside her and hold her hand or let her touch you, but that's it.
I'm not saying it'll work for you, but this is a good starting point and one which worked for us, and we finally solved it completely and amazingly, by buying her a Gro Bag