I'm admittedly not up-to-snuff enough to know off the top of my head (and am heading to bed and am too tired from today to look back for the specific verse), but the link I gave contains a very persuasive argument that the 1st century Jews understood it to be "virgin" and not
just "young girl". Did you click the link and read? (By the way, that isn't my webpage, and I should have pointed when I linked it - sorry if I made it appear that it was.)
Good night, and stay safe.