I feel your pain Reeko. I worked for many years with a girl who constantly yapped away in a Bianca Jackson type voice at ear splitting volume at anyone or anything within earshot, she'd even give a running commentary whilst flicking through the pages of Hello magazine EG: "Oooh, she's put on a lot of weight, she's had a lot of work done," etc etc ad infinitum. It drove us all fecking mad. DO have another word with your manager and have a word with her yourself. Tell her you find it difficult to concentrate on your work whilst she's constantly blabbering away and she might make an effort to pipe down a bit. I'm not saying it'll work as some people just can't help themselves but it's worth a try.