I'm pretty sure that Noah is their child from the past life. He has the same eyes as Charlotte and dark hair as Dietrich. Also explains his attachment to his 'mother' compared to his 'father' he never met.
Only problem is the time between her being catched and maids death. The Lady doesn't seem to be showing any pregnancy signs that the maid noticed.










I agree that none of the ML feel really fitting for her. Closest would be the servant though since the latest chapter. She feels familial affection for Jerome and the Duke... well, he's bland for now.