Jordy was like this too. I remember how frustrating it was, but in the end I just had loverboy do anything that took 2 hands, particularly dinner things (I'm not organised enough to pre-prepare).
I could sometimes put his highchair at it's highest level and roll it over next to me so he could stay close, maybe put a ricecake or a bath toy on the table...
It didn't really change once he started walking. I mean, I didn't need to carry him as much, but he did need to be near me at all times. I just learned to walk slowly so he could keep up and not think I was trying to get away from him, or I'd say "come on, we're going in here now". Even now (he's 2 1/2) he will pretty much always be where I am, even if it's playing on the floor nearby while I cook dinner or playing in the empty bath with his toys while I take a shower.
I did insist on him sleeping in his bed, though.
Is there a reason you can't sit with her? That's no good for you and she may just have to get used to it. Some things are non negotiable for your own sanity's and/or health's sake.
I studied intro to psych last term and we were told that if you don't fight it and find ways to work around it instead it can lead to healthy attachment, if that helps.