Helena wears her hair down Helly-style in the Chinese restaurant

Did Helena wear her hair down, the way Helly does, as a way to attract Mark in the Chinese restaurant? Normally Helena wears her hair up and Helly wears her hair down, but because Helena wanted to be attractive to Mark I think she wore it down on purpose, maybe even hoping to spark the attraction he feels for Helly and get him to feel it for her, Helena.