ふしがある => Seem N2
Speculation
てくださる => to give N4
Benefit
お…くださる => Please do ~ (honorific) N3
Respectful, humble
ふりをする => to pretend; to act as if ~ N3
ふそくはない => nothing to complain about, just as expected N3
As expected
ふりをする => To pretend to (be) A N3
Adjectival, Description
くださいませんか => Could(Would) you please N4
んだ => Let's... N4
Order
~でなくてなんだろう => must be; is definitely ~ N1
Emphasize
もの/もん/んだもの/んだもん => because; indicates reason/ excuse/ dissatisfaction N3
ふと => suddenly; accidentally; unexpectedly; unintentionally ~ N3
て[下「くだ」]さる => Do for someone N4
Give and take advice