We haven't met any kangaroos since. But I know where to find them, so if I have time, I'll take her over for another training session soon.
In the meantime, I've started "child proofing" her! Kids are really her biggest temptation. She cannot resist running up to them and jumping all over them, even babies in strollers! I think it has something to do with her foster carer who had a 3yo and a 5mo. She must miss them.
So yesterday at our dog walking spot I put her on the lead when I spotted a grandmother with 3 kids ranging from 3-4 to about 8, Banjo's prime 'targets'. And walked closer and closer to them and hung around a while so I could reward Banjo for looking away from them. I eventually tried to explain to the woman what I was doing, but she wasn't a dog owner and looked at me as I was a bit loopy.