と伝えていただけませんか => Could you tell, Could you convey N4
させてあげる => (Allow) N4
Allow
てみせる => I'll show you ~ N4
Purpose, target
させてくれる => Let me... N4
Allow
てみせる => To show (the action) A N1
Will, Decision, Doing
手前 => considering; before; in front of; one’s standpoint N1
のが下手 => to be bad at doing something N5
のが上手 => to be good at doing something N5
せいにする => Blame... N2
Cause, reason
姿を見せる => figure; appearance N3
Ability
させてください/させてもらえますか/させてもらえませんか => please let me do N3
がっている => Want, like N4
Secondary Verb