Parenthood Season 4 Episode 15 Because You're My Sister ( Air Date 2013-01-22 ) Genre Drama category. Overview "Jasmine and Crosby plan an anniversary get away and receive exciting news. Kristina and Adam prepare for the next phase of her treatment. Drew learns the results of his college applications. Amber and Ryan discuss the future of their relationship. Joel and Julia plan an event for the entire Braverman family. Meanwhile, Sarah is forced to make a decision about her relationships with Mark and Hank.".