Paddles completely slipped my mind. We don't present them until initiation. So you may have a while.
QT--A pledge mom is also known as the pledge educator. She an active member of the chatper. Her job is to teach the new members the history and some traditions of the sorority. During your pledge period she'll probably be the active that you have the most contact with.
The house mom is an older woman who, well acts like the mom of the house.

She may be a sister of the sorority, another sorority, or not even Greek. She takes care of the day to day running of the house. She'll plan the meals with the cook, things like that.
Not all chapters have a house mom. When that's the case, there will be a house manager. That would be an active sister who basically does all the things the house mom would do.