Hi I used to work in nurseries, and to be honest, the babies who were initially demanding, and very attached to parents usually benefited the most from nursery life, as within a few weeks they had gained a bit of independance and become to enjoy the variety and watching other children.
The staff will not find her a nuisance!!!! if they do they are in the wrong job. Children who were difficult to settle were often the fun challenges for our day. We'd thoroughly enjoy working closely with all the children and watching their characters come out as they settled into nursery life.
In my 10 yr career there were only ever 2 children i suggested gently to the parents it may be best they waited a while before starting nursery and this was after weeks of attempts, we just had to accept that they were not ready for it. But that is 2 out of hundreds.
You're not being an overly worried mum you are beging a normal mum!! Theres no pretending, it is horrid horrid horrid for mums on the first day of nursery, but we all get thru it!! and it doesn't take long.
As a parent i kind of appreciate the webcam's a little, but as a professional i have my concerns. Firstly, if parents feel the need for a webcam, they obviously don't trust the nursery and shouldn't use it. And secondly my concern is things can be taken out of context eg playfights could be seen as genuine, and all sorts of little things you do with children could be misread on screen, like y'know when you might pat a babies bum (with nappy on!) playfully, could a paranoid mum think it was a smack??
Sorry i have really waffled here!
Nurseries aren't all bad, children learn a lot of new skills when surrounded by other children to watch and copy, that they may not get the chance to at home all day.
I wish you well,