And I am afraid to say this is one of the reasons I quit the lunchtime feed when she was about 12 months. They are such little beasts when they aren't interested and you are in a rush! I think I just used to persevere - almost in tears!
The good news is that now that Jenna only has 1 feed while its usually still dark, and its lying down in my bed, she hasgot heaps better. No longer grabsmy boobies in the shower, and wont pull my top down anymore.

Such a relief - but I think as long as you are happy she is getting enough, I just cut the feed until she behaves herself. No point trying to give something to someone who isn't all that interested.