That's a real result. A 67% appointment rate on cold expired follow-up is well above what most people report, and two signed listings in ten days from six contacts is the kind of outcome that justifies the whole model.
The thing you landed on matters: the difference between a VA who holds the conversation and one who falls apart when a seller pushes back is almost never about the script. The script just starts the call. What carries it is how the VA was trained to handle objections, which are the moments when a seller says something like "my agent was useless" or "I'm done with all this." A VA who can stay calm, acknowledge what the seller said, and redirect without reading a canned line is doing a genuinely skilled task. That skill comes partly from selection and partly from deliberate objection training, not from giving someone a script and hoping for the best.
The note-taking instruction you added, writing down exactly what the seller said about why they thought it didn't sell, is worth keeping. That information tells you how to price the listing conversation before you walk in the door, and it's easy to lose if the VA is just marking calls as done.
One thing worth verifying as you add more VAs: the training process that produced this person. If you can document what you gave her and how you onboarded her, you can reproduce it. If you can't, you're dependent on finding the same fit by luck the next time.
The strategy guide's section on recruitment and training covers this in more detail under the Guide tab if you want a framework.
What did your onboarding for this VA actually look like, time and materials wise?