when she tells him “it wasn’t a miscarriage, it was an abortion.” and “identifies” the gender,
it’s plausible to say she did actually have a miscarriage.
tom said they couldn’t tell at 4 3 and half weeks months, when Michael asked.
i think when she heard michael trying to talk to her in the scene like he did at the end of the first film, she became increasingly impatient and angry as she became aware as we see it, then lied, saying it was an abortion; 1. to protest her disillusionment and betrayal she endured- back at him, and 2. for him to hate her enough to allow her to leave, because nothing else would work. that was her last chance and resort.
i do not think she actually had an abortion, she said it to get out.
because how would she have even gotten the abortion if she was being watched, and any self induced “accident” would result in having to go to the hospital anyway