Complex sentence: Cruella invites the devastated Chloe to dinner at her house with several other guests and their dogs, and she accepts, but while she is away, LePelt breaks into her apartment and steals the three puppies despite trouble with Dottie.
Split into simpler sentences: Cruella invites the devastated Chloe to dinner at her house with several other guests and their dogs. While Chloe is away, LePelt breaks into her apartment and steals the three puppies, despite trouble with Dottie.