I agree you have to do what works for you. I have always stayed in while they go off to sleep - I love the chance to stop for 15-20 min although it can be painful especially when I am uptight or have something else to do but on the flip side I try and use it as my quiet time too so I can relax etc. DS was 4 before he started putting himself to sleep and we would do our normal routine and then I would say I had to go tothe toilet. If he stayed in bed while I was gone then he would get a tick/sticker (this was on his door so I would tick off as I walked in and we would look at it in the morning and do the stickers then) after about 5-10 min I would go and get a drink same thing Gradually my toilet trips got longer and eventually he fell asleep without me in the room. We talked about it in the morning and then decided if he could start going to sleep without mummy and daddy he could get a budgie. It was a long drawn out process but left him feeling so proud and self confident that he could go to sleep by himself and he tells us he is ready to teach his sister this vital lesson so she can get a budgie too :-)

I have heard the moving the chair idea before and we did this when we moved from lying down beside them to just being in the room (probabaly around 2-3yrs old)

Ultimately you want to ignore the behaviour you don't want repeated - even getting angry can be taken as a form of reward as it is getting your attention. So anytime you put her back to bed it needs to be without giving her attention. I always go by the old adage don't give them the chance to do the undesirable - so if it takes 5 min to get out of bed, pop in at 4 min and pre-empt the bed hopping, reassure her that your are still there - sit and stroke her hair whatever, then get up again and say you'll be back to check on her - again pre-empt the getting out - even if you have to stand at her door and listen for the momvement - be there before she gets out.

Hope somewhere in all this rambling there is something resembling a helpful comment. Good luck