I assume you are in Halifax? Unfortunately it is not a great city for hobbying. Only 1 agency which is Your French Lady (YFL), they have girls travelling from Montreal but usually only 1 girl at a time for a few days, maybe 2-3 girls per month on average. In my opinion they are the best option. Independents advertise on a mix of Leolist and Lyla. Be warned there are tons of scams, tons of bait and switches, and many of the legit independents are super unprofessional. I agree with the previous poster that if you have the means taking a trip to Montreal every so often is probably a better option.
If you're in any other city in NS you are probably better off just heading into Halifax, there aren't many options at all and no reputable ones I am aware of.