I doubt it, as the sig looks different. Then again, my signatures on my works vary nearly every time i sign. If it is , however, the person you have linked to, it's a she:
http://www.nihonbijutsu-club.com/ando/?page=profile
There is no seal on the item you have, is there? Also it would be helpful to know what kind of art she is into. The artist you linked to paints flowers, hence her 雅号 (alias) - Flower (petal) Vessel (華舟).