K.D.
My cousin had the same problem. what worked for them was when she wasn't around her husband would drap a shirt over his shoulder that my cousin wore the day before so it smelled like her. After baby calmed down he would distract the baby with a toy and remove the article of clothing.
When she was around they would all play together and she would leave the room for a minute and come back in and increase the time frame that she would leave baby and dad together so baby got used to the fact that when mom leaves - she comes back. Hope it works for you too.
K.