As much as I can tell that you two (Val and Card) don't want to put points into STR I recommend doing so anyway as better weapons require more STR as well as certain combat techniques. For instance Val you mentioned you want to use mana blades, those would deal more damage when you have more STR and for Card if you want to use shields or wear armor STR is required to do so. 

Plus if you ever get grabbed... STR can really help you out.