Or to refer to women in royalty. Infantas, princesses and queens are “doñas”: Check out these two “doñas”.
As **KarlGrenze **mentions, don/doña is the default for an elder in Puerto Rico. Señora/Señorita is sort of in flux, mostly if it’s an adult woman in any sort of position of responsibility she often gets addressed as “señora” regardless of the social protocol. One thing that has been getting more frequent when addressing unknown persons has been to refer to young people of either gender as “joven” (“young person”), and to clearly adult people as “caballero” o “dama” (“gentleman” or “lady”).
And yes, the culture here shares the Latin American tendency towards a multiplicity of professional titles or ranks (other than doctor and professor) getting stuck in front of your name and being used by themselves as your short-form address (though not as excruciatingly as some of our continental brethren). So a female lawyer (or pharmacist or medical technologist), if you know she is one, can be addressed as just “la licenciada”.