By the time I got to the bottom of the popcorn bag, I was wondering what a more developed Jewish sensibility could do with these themes, each of which ponder the connection between heart and soul. Streisand wanted to show that sex and love are divinely inspired, she might have had Rose at the mikvah, experimenting with purification rituals and withholding sex, not as a manipulation but out of respect for a holy calendar. If she were of a legalistic mind, she might have shown a Jewish wedding ceremony including the signing of a ketubah, the contract that guarantees the wife's conjugal rights. Had she adopted a Zionist point of view, Streisand would have had Bridges' Gregory convert to Judaism before the marriage, breaking the glass and doing the hora. You see where I'm going, only somewhat facetiously.
Jewish tradition does offer alternatives to romance.
It offers an adult concept of true love. But if passion, the red-hot poker of the sublime, thrives in isolation, it is in tradition that tranquility resides. Tradition tells us who is safe to love and who is a stranger. She's out to defeat her body, her brown roots, her history and her mother. That's why whatever she sees in the mirror is distorted.