“Locked away in the attic.” is most definitely a fragmented sentence. There is no subject given, so we don’t know what is locked away in the attic. The sentence does not make sense in that context, therefore it is a sentence fragment.
I believe his anger disappeared, as he too wanted to patch things up.
This has to do with Milton's Paradise Lost, where Eve ate from the Tree of Knowledge, and then made Adam do it as well, which caused them to fall from grace. She started apologizing to Adam, saying that it was in fact her own fault, and because they loved each other, he forgave her because he wanted to be with his wife again.
Well from expirenaces it would be #3
