Kath,

I don't think you are breaking the peace if you had asked the lady to get her dog! She was in her own world and not paying attention or wasn't caring enough to tend to her dog. If she wanted to ride her bike leave the dog at home if she wanted to walk her dog leave the bike at home. She needs to be respectful of her neighbors or neighborhood and control her dog. We have dog parks in OH where leashes are not required. I commend you for still walking your dog. I have a red Golden Retriever "Copper" he is too strong for me to walk him. I don't have the strength and endurance I would like to have.
You don't need a sign. I'm sure your body language is saying I have a health issue. Especially since I'm sure your injury wasn't allowing you to walk normal. We get enough lables from those who don't understand our condition. We don't need to lable ourselves.
I hope your ankle is feeling better and it didn't flair your pain!!
Take care,
Sherrie