She'd be better off getting a 401 or a 500 or a similar machine than fighting with finding those stupid 206-13 needles.
I do know where the metal should be removed to alter a 319 to use 15x1 needles but that is something I haven't done, so I don't want to try to tell others how to do it.
The info is here on the forum, so anyone with a better search ability should be able to find it.
Joe