It is turning into a long story - I do like writing about the various other dogs and other people, but it makes the account very long winded.
Baroness - you mentioned pulling Wanda away from other dogs and wondered whether Olive's owner was worried about her own dog or about Jess when she did the same thing. The answer is probably she didn't trust either dog.
I was reminded of Nat's advice to me the other week. She gave me a mild telling off - you may remember I mentioned it but didn't elaborate.
On the group walk one of the other dogs approached Jess and Jess put a front paw up against it. I instantly pulled her away and Nat said I shouldn't have - Jess was giving the other dog a stern but polite 'No, I don't like that.' as the other dog had approached in a too full on manner.
She (Nat) understood what I was doing and why but said it was important not to make Jess think all her active interactions with other dogs were wrong. She admitted it was difficult with a big, strong dog and said she'd had a similar problem with her own Mister Wolf. He was attacked (sorry but by an out of control Staffie) and for a while became very nervy and cagey round other dogs. She has had to nurse him back to confidence - dogs mustn't get into a mindset that all other dogs are not to be approached - that they will be 'in trouble' if they do.
Not sure that reads properly I will post it and see!