She must know
I have told her she is gorgeous, beautiful, lovely, wonderful, funny, witty, etc etc several time over the last few days.
She definitely gets close to me - I really do need to see her with other people, will have to try and work something out. Needs to be with her friends too as mine would be strangers to her.
I got the feeling she wanted the dc out if the way when I was leaving and she came and stood outside with me but they came too. I'm not sure what would have been said it done but I just had a feeling iykwim.
She has done nothing to make me feel my attention isn't welcome.
This is the exact text I sent her when I was in the taxi:
Love the photo of us, dont put yourself down. I don't think you realise how gorgeous you are, you have beautiful eyes and a smile that lights up the room. Be impressed when you look in the mirror because if you saw what everyone else sees you wouldn't doubt yourself
And she replied
Thank you so much, I have a tear in my eye xx
I'm not doing very well at subtle am I 
Then she said she thought I was lovely and that her dc thought so too and she said I was welcome round anytime and she said she meant it