Not much help with bedtime sorry - but does your dd like smarties or any sucky sweet?
Start a game with her - see who can make a single smartie/sucky sweet last as long as possible - talking's not allowed for the duration. (or a chunk of carrot if it's been a particularly hard day
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Set a timer going and build up to last a minute, two, five etc... (might have to give control of say 3 sweets to facilitate this longer time - but if there's any talking then any remaining sweets disappear, can only be eaten one at a time). Turn it into a challenge to beat her previous time
I know it's not much but if you have a non-stop chatterbox then having just a little break of silence in the middle of the day can help.
dd should like it as she gets a few sweets but by making them last as long as possible in silence then you get a few minutes for yourself (or she can go to eat them elsewhere where you can't hear if she does talk while eating so still a win).
I know, I know, sweets are bad and all that - but sometimes they can be used to your advantage. And I'm not advocating eating loads of the things - just one or a few for a few minutes respite.
I learnt this trick a long time ago - my mum used to keep a box of smarties in the car for me and my sis to have competitions with on long journeys!