Oh she knows exactly what she's doing, and how could you NOT tickle those?? They are just begging for many strokes up and down those wrinkly soles, and I hope you took care of that!!
I swear she gets more ticklish by the day. She far more ticklish today at 42 than she was when she was 19 when we met. I got her with a feather the other day on those arches and she was in tears laughing.
Thanks for the comments everyone.