Sandy's scene reminds me of Natalie Wood's scene with her mother in "Splendor in the Grass".
The past is a series of presents. The present is living history we are privileged to witness
Obviously there were limits on dialogue as well as visual aspects of a provocative --by 50's standards-- film.
Chains, my baby's got me wrapped up in chains.
And both of them remind us of years of dreams .
Shappe , do you drean any more ?
And, come to think of it, there is an analogous scene in 1965's "A Rage To Live". The mom played by Carmen Matthews confronts her daughter, played by Suzanne Pleshette, about her teenage sex life. Suzanne gets pretty shook up trying to deny everything. Just like Deenie and Molly.
Now days you just assume your kids are having sex in high school.