I'm no expert sorry, but I just wanted to reply to your thread!

I know you want her to sleep in her cot, but would you consider a big bed or a mattress on the floor so you can lie down with her in her own room? Then if she wakes up at 2:30am you can hop into bed with her which will break the habit of her being in your bed. Hopefully she'll then eventually stop needing you to come in.

Probably not much help to you! I hope you find something that works soon .