Feather!

You tickle her soles for a couple minutes before pulling out a feather. You slowly drag the tip of the feather between her wiggling toes, tickling them. Her toes clench and wiggle as they are tickled. "No!!! Hahahaha, hahaha! Please no, not the feather, please, no no no!!!" You slowly drag the feather across her feet, teasing her as you tickle her. She laughs and squirms helplessly. "Please no, I beg you, no more! Please, no more tickling, please! I'm going insane!!!" You love the way her feet wiggle and squirm under the feather. They wiggle back and forth and clench and flex as the feather tickles them. Her toes curl and stretch out and wiggle about, dancing with the feather. You can tell she is exhausted, her feet have been wiggling and squirming non stop for a while now, but she really can’t help it. Her feet are extremely ticklish and they just can't stop wiggling and squirming. You enjoy her reactions immensely, her wiggling toes are so cute. What do you do next?