Hard stool 11 month old

Lately my daughter has been having fairly hard stool. It's been going on just over a week. She's plenty hydrated(I assume) She gets water during and after each meal and throughout the day. I tried adding some Pedialyte to her diet and that didn't do anything. She has lots of fiber rich foods and she doesn't eat any junk. She's formula fed and has a lactose issue so we are avoiding any dairy. Any suggestions? Maybe some watered down apple or pear juice? Any advice welcome!