It's not too bad at the moment as she doesn't actually have any teeth. But there's one coming through and I'm feeling distinctly nervous. 
The problem is that she used to spit the boob out the minute that flow slowed down - never had any interest in feeding for comfort etc. Now she is starting to get uncomfortable gums she'll stay latched on for ages, gnawing thoughtfully rather than sucking.
I don't want to delatch her because I'm in the final stages of phasing out top-ups (a marathon battle) so I need her to take as much from me as possible at the moment. However, I don't want her to still be in the habit of chewing on me with a mouth full of teeth.
Any thoughts, advice?