Sore feet

Gracie has been waking up over the last two or three nights complaining about sore feet. I take off her knee immobilizer and brace and rub both her feet. I put the brace back on but not the immobilizer. Then she falls back asleep. I did not pay much attention the first night so do not remember when it occurred so I can match her day's activities with her pain. But yesterday she spent maybe an hour in the park but other than that nothing out of the ordinary. Tho I guess she does walk more when she is not in school. Will keep an eye on this. We see Mary at 4 on Monday for PT and will bring the night brace with us.