[delacroix01]

Again, can someone tell me the meanings of the words in red? I've looked up the words in dictionary, but I'm still not really sure.

1. カッと目を見開き、覚醒したサクラはへっぽこ発言の撤回を激しく求める

2. 二人の間に、微妙な空気が流れる

3. 優等生の姿を演じ、担任に取り入り、教室の中で自らの居場所を作り出すその手段に安易に 皆騙されていましたが、わたくしだけは違いましたわ

My guess is that 微妙 means "awkward", 担任に取り入り means "gaining the homeroom teacher's favor", and へっぽこ looks like "impudent" to me.