I was able to walk both Betsy and Jack and both did their business.
Ellie is still a little shy of me , bit after I finished walking the others I sat for a while to let them. Ellie slowly approached over the course of a few minutes and eventually I was able to pet her. She continued to pull back, however, when I tried to put a collar and leash on her.
I think that if she already had the collar I might be able to slowly befriend her enough to hold the collar while I attach a leash.
But she did allow me to pet her several times, which is good.