Every listing here includes “Sadomasochism” among the services the escort says she offers. On this page: 98.
Labels in two languages
The site shows service names in English, but most escorts in Brazil write and chat in Portuguese. If you raise a service, quote the label exactly as it appears in her listing, or paste the Portuguese version from the site's Portuguese pages. A plain, polite sentence beats slang you are not sure about. Translation apps do fine with short messages; long ones tend to get garbled.
Where it happens matters
A service that needs a shower, space or quiet works better in some venues than others. A Brazilian motel suite is built for privacy and normally has its own bathroom. A hotel room is fine if the walls are not thin. At her place she knows what the space allows. If she comes to you, think about towels and a bathroom you can use without disturbing anyone.