If Antonin knew what she had been doing over the years since their son was born, he would not hesitate to murder his wife. She'd grown weary of the constant prattling he went on and on about having a daughter. When she succumbed to his desire, she made the decision that she would have one more child for the man just to shut him up. The tumble down the stairs removed all chance that she would allow him to do so again. She was in danger. If Andromeda told her husband what she overheard, he would be so angry that she would be no match.