Originally Posted by zounds!
I think what we've heard from Edna, saying "that dog has assaulted me before" in episode 1, will probably be the explanation here. 1986 Edna didn't even really realize it was missing anyway. Maybe she's just senile but who knows?
Yes she did, she even kept the other shoe and puts them together.
And yes I buy into the recent point brought up; einy and edna obviously had a run in prior to marty arriving in 1931.