Chloe Decker's dad doesn't die in the comics. The storylines don't include that event. Maybe there's some confusion with a different version or interpretation, but in the original comics, he remains alive throughout.
Since there's not much information given, the 'chloe chloe love story' could be many things. It might be a modern - day love story where the two Chloes connect through social media. They start chatting, find out they have a lot in common, and then decide to meet in person. Their love could grow as they explore different places together, face challenges together, and ultimately find true love in each other.
Chloe in the 'Capturing Chloe' werewolf novel is most likely a character of great significance. She could be a human who has found herself in the middle of werewolf politics or a werewolf with a unique ability. Maybe she's an outcast werewolf that the others are trying to capture for some reason, like she has a power that they want to control or she has knowledge that they don't want to be revealed.
The main characters are surely the two Chloes. It could be that one Chloe is more outgoing and the other is a bit shy. Their different personalities could play an important role in the development of the love story. For instance, the outgoing Chloe might be the one to initiate the relationship, while the shy Chloe might take some time to open up but then bring a lot of depth to the relationship.