I'm still looking to have the line filled! Whitney's entire bio is here and I've tried to be careful not to mention the brother too much in canon other than the following: name is Charlie, lives with Whitney and her daughter (and is a perpetually reliable babysitter, bless his heart) and is in college. Whatever else he's getting up to is fairly open-ended, and there's plenty of other wolves in the game that would love to plot out some things with you as well. I encourage you getting in contact with the alpha character here!
Would you like me to make a custom post so we can discuss more?