Complex sentence: She has one half sibling, through her mother, named Tiffany Wiest, and two half siblings, Jade and Jullian Frampton, from her father's previous marriage.
Split into simpler sentences: She has one half sibling through her mother, by the name of Tiffany Wiest. And 2 half siblings, Jade and Jullian Frampton, from her father's previous marriage.