質問: But what upset her most was that Josh had made these plans on his own and informed her of them ,rath
回答: 適当に限って訳すとわかりやすいでしょう。 rather than よりもむしろ、する代わりに But しかし what upset her most 彼女をうろたえさせたのは was だった that Josh had made these plans on his own ジョスが自分一人で計画を立て and て informed her of them 彼女に知らせたこと ,rather than 〜ではなくて discussing them with her 彼女と相談する before extending the invitation. 招待を伝える前に