What are the motifs in The Verge by Susan Glaspell?

Locked out and locked In is a recurring idea. In The Verge, Claire feels trapped within her circumstances, and Glaspell uses numerous visual and textual images to emphasize Claire's imprisonment. In act 1, Harry tries the trap door and finds it is locked. He then exasperatedly says, "Well I love the way she keeps people locked out!" This, of course, refers to the trap door, but on a thematic level, also refers to the larger issue of how Claire keeps everyone locked out from her own feelings. A short time later in the play, the theme is visually played out when Tom is locked out of the greenhouse.