I was as confused as the other two commenters about this woman and her frantic behavior and the reason behind it, until the part where she quoted Edna St. Vincent Millay. When I watched this movie I was in the middle of reading What Lips My Lips Have Kissed by Daniel Mark Epstein. A brilliant biography of Ms. Millay and also containing much of her poetry. I think Hilda was struggling with her feelings for men and women. I think she might have known which way she "swung", even before her two previous marriages. But in the '50's I think many women did the marriage, children, husband route even if they were denying their own sexuality. Now it is much, much different.
Review of Hilda Crane
