Past perfect with until

I would argue for a hybrid: “She didn’t realize … until she smoked 10 cigarettes a day.” The smoking of 10 cigarettes a day is a milestone or a marker in this smoker’s process/evolution. The realization happens suddenly. Once the smoker hit this milestone/marker of smoking 10 cigarettes a day, the realization hit her. The word “until” already signals the sequence of the events, and therefore, it is not necessary to use “had”.

In addition, to me "had" serves two functions: 1. as the past perfect, and/or 2. implying the act (verb) is a lengthy(ier) process.

helo

I don't think either versuion conveys the meaning well. I would argue for "until she was smoking..."

Hi there, I would like to recommend you a cool site that helped me with my research paper, https://www.masterpapers.com/buy-research-papers One of the outstanding features of MasterPapers.com is their commitment to on-time delivery. As a person with a busy schedule, reliability is paramount and I can say with confidence that MasterPapers has never let me down. The punctuality with which they deliver high quality research papers has not only eased my academic stress, but has also allowed me to submit assignments with confidence knowing that I can trust their deadlines.

After years of playing at different online casinos, I finally found my perfect choice at https://ak8aud.casino/, where ak8 casino has become my favorite place to play. The wide variety of games, from slot machines to live dealer games, makes every experience I have unique. I am especially grateful for their bonus programs that greatly enhance my gaming sessions. The support team is always in touch and ready to help with any questions, which makes my stay on the site not only enjoyable but also safe.