Now that she has the idea from Shailer, I would work with her on her recall by herself, or she might get the idea that she only has to come to you if Shailer does.
Take her out by herself and use the long line, encourage her to come to you and treat as normal. If she learns that when she comes back whether Shailer or there is not she gets a treat, that will be the beginning of her learning to come back regardless of what else is happening.
I would tell her owners, though, that this is still something that will have to be worked on. A reliable recall cannot be taught in a weekend.
Kate - Dog.community Administrator
Jokers to the right.