Didn't she have a dossier? I know the variant was in MM at one point.
Tassa's Ryoken II was never made as a figure (only a Swordsworn and Highlander version were made of that giant chunk of plastic), so she had no dossier. The sheet in the RS:MWDA book is based (near as I can tell) on the descriptions given in the novels-and is, if we're honest, a pretty good machine, if a little boring. By the time we got a pilot card for Kerensky (after the AoD rules change) she had moved on to her Savage Wolf.
(All weapons, as I recall, are torso-mounted still, as with the original model.)