So, just to update. 96 hours with no response to two emails so I moved on. I reached out to two other Dommes in the area today. Both replied within 2-4 hours and I now have two sessions booked for later this month.

I actually read the Perb CC BDSM review forum for Vancouver and found several references to the first Domme being unresponsive to emails and a couple of instances of her taking deposits and being a no show. Maybe I dodged a bullet? It's a shame because I sessioned with her when I was there last (just before Covid) and she was great.