I have a few 30 Stringed Alto and Tenor instruments in my inventory right now that you might be interested in. How old is your granddaughter and does she already play an instrument?
For a complete beginner I would suggest the alto (solid wire strings). They seem to be the most popular as compared to the tenor but I prefer both depending upon the particular song you are playing.
Take a look at my web site and see if there is something of interest to you. I usually sell complete packages (psaltery, bow, rosin, tuning tool and electronic tuner). I also have a wall mount that converts to a tripod mount available.