Well, I must say that the ending of this episode further confirmed my belief that Claire is and almost always has been a buzzkill to the show, in my opinion. Every season her storyline and character is so similar and so stale that it came to the point where it seemed that she became absolutely unnecessary in almost every way.
Each volume, it was pretty much the same thing. Defy her dad, whine, complain, question herself, question her dad's love, and get involved in glossy relationships with boys (and a girl) that went nowhere. It became obvious to me that on numerous occasions she had no importance to the overall theme of the show.
I can't think of any other way to put it. It has seemed for quite some time that Claire was forced down the throat of viewers, whether they liked it or not. Personally, she is a main reason why I think the show has fizzled year after year.