Themes
Mothers don't lose daughters. Don't you remember? They gain sons.
— Young Charlie

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Rather than framing marriage as loss, this line reframes it as addition — a mother doesn't lose a daughter to matrimony but effectively gains a son-in-law as family. It's a gentle correction offered to soften anxiety or grief around a daughter leaving home.
Context reviewed