Oh that poor little baby mom. :sad: Bringing a dog into the room and plunking it down in the midst of the room near her babies is one of the most traumatic things that could have been done to her. She is in a highly protective mood right now with babies to keep safe and her barely over being a baby herself. And putting her outside as if she was the one who did the wrong thing may have made it worse. The dog should have been removed immediately.
Please take the time to read these web sites. There are plenty more out there about introducing cats to dogs properly.
http://www.thecatsite.com/Behavior/5...s-to-Dogs.html
http://www.samsmiles.org/catsdogs.html
http://leerburg.com/dog-cat.htm
Just as an offside - seeing as she is an indoor/outdoor - are you planning on having her spayed as soon as her milk dries up?