せいにする => Blame... N2
Cause, reason
まわる => to go around N3
Go through, go through
させてあげる => (Allow) N4
Allow
てみせる => I'll show you ~ N4
Purpose, target
姿を見せる => figure; appearance N3
Ability
にいわせれば => if you ask...; if one may say... N1
Base, base
と[言「い」]わせれば => On the view of N1
Based/focused/depending on
終わる => to finish; to end N4
させてくれる => Let me... N4
Allow
...が...を...みせる => make it look like... N4
Base, base
~きわまる/きわまりない(~極まる/極まりない)      => extremely; very ~ N1
てみせる => To show (the action) A N1
Will, Decision, Doing