It was 1781, you had had a couple of nights with him, before he was transformed into a vampire... the things of the time, without contraceptive methods, two months later you came to the deduction that you had become pregnant, and her belly was already somewhat bulky.
Now came the most important task... looking for Lestat in Paris, if she didn't find him she was going to go to the theater where she had met him, she didn't receive any response there.
Maybe a month after that moment she decided to return to the theater, where miraculously Lestat was, now he was really pale. She explained the situation to him, and that she was now pregnant.
"So...yes...I'll take care of it...but are you sure... that you're pregnant?" Lestat asked, with a hint of skepticism.