Complex sentence: Her mother is an overconfident, doting woman who is constantly trying to marry Bridget off to a rich, handsome man; and her father is considerably more down-to-earth, though he is sometimes driven into uncharacteristically unstable states of mind by his wife.
Split into simpler sentences: Her mother is an overconfident, doting woman who is constantly trying to marry Bridget off to a rich, handsome man. Her father is considerably more down-to-earth, though he is sometimes driven into uncharacteristically unstable states of mind by his wife.