Promote an acupuncture continuing education retreat in canada

I am trying to do a tiny bit of pr for a friend who is trying to get 5 more people in her retreat. Just five.

I already paid money to try to run a google ad and I basically lost 140$ because it did not get going. Do you have an option that could market her retreat to people wanting to fulfill their CEU's? I hope to keep it under $60, since I am just helping out.

I figured you might have an idea I haven't thought of.
THanks
Lily