Thanks, I think that was enough information for me to confirm that I have fround your lost scene.
Reference the screen shots for the dialog you asked about, that should jog your memory.
The actress is
Yuki Kodate. The scene is from a film called "
Lovers Lost" 1982
I have the clip but I dont think I can post it here as it is watermarked by a Japanese site. (Not sure what the protocol is on that).
However,
The full film is available here:
hXXps://archive.org/details/dotonborigawa.-1982
The scene in question starts at about the 1h19min mark (turn on subtitles for the dialog)
Any other requests?