Here's my suggestion
Go to Massage Republic https://massagerepublic.com/female-escorts-in-halifax?utf8=โ&location=Halifax
From there, look at the top of the page... it will say "Female Escorts", "CAD", and then "All Services"... click on All services, and it opens a drop down menu.
From the drop down menu, scroll near the bottom, click "giving watersports", then hit search. You'll see 14 or so ladies who have clicked that they offer that service. You can message them through the Massage Republic website, and/or check to see if they are members on Lyla (many are). Be polite, don't be graphic, and see if things work out.
There's no option to search for face spitting, but perhaps search using "domination".