This side of the Atlantic, I've never heard "sweety" for a piece of candy. I like it, but I haven't heard it.
Back in The Day when I used to work for the Official International Queen Fan Club (the band, not Her Majesty) on this side of the Atlantic, I happened to be visiting the club's main office in London one afternoon. Jacky, the woman who ran the operation, had her two-year-old toddling around the office. The child had a small bag of candy in her fist and I remember Jacky asking her "Aren't you going to share your sweets with Ouisch?" And this little girl with the most adorable British accent (why are accents that much cuter when they emanate from the mouths of babes?) shyly approached me and asked "Do you want a sweetie?" :lilangel: Anyway, that was when I learned that what we Americans generically refer to as "candy" the British call "sweets."