What a bizarre story kenty. and how awful for someone else to play god,as it were.
This will do nothing for your trust with your mum in law. She maybe deep down assumed she was doing you a favour or sorts, But id not be happy either. As she lied to you.
right now you need almost babied yourself,and to feel reassured that life is ok to bring a baby into. Believe me,,it IS ! and not everyone is out to be such a kunt ! Though i wouldn’t blame you ,if you never took this woman at face value again.
NOT NICE !