One would think it’s possible Van Helsing will have Tricia Helfer back for future seasons as well, provided Syfy renews it following Season 4.
Dracula is the main rival of the Van Helsing family, so this dynamic between the two characters could last a lot longer than half a season.
Whether it actually will fans will just have to wait and see what the plan is, and hope that showrunner Neil LaBute doesn’t put Helfer in the midst of his epic prank war, or something more lethal.