Unlikely, unless they treat her possible death at the end of throne of bhaal as non cannon xD. Plus Viconia wasn't that popular. Hell I'd love a Edwin cameo, but he is likely long dead seeing he was a mere human. Of the bg companions only the people of elven or dwarven descent are quite possibly alive.
There are rumors about Edwin and if its true we have way too much humans from the past... I have a big problem with the fact that there are too many humans (currently 2-3) from the predecessors: Will mean coincidentally several humans (confirmed are Volo & Minsk, unconfirmed Edwin) from the Bhaalspawn saga, coincidentally 100 years after the events in the same future / present of our adventure, coincidentally live in Baldur's Gate and surroundings, in addition to the other non-humans (confirmed Jaheira and probably some others?). These are a few too many coincidences at once.
