てさしあげる => Do for N4
Give and take advice
さあ => well N3
Suggestion
てさしあげる => to do something for somebody N4
Respectful, humble
さあ => well (negative meaning) N3
Emphasize negative meaning
[際「さい」]して/に([際「さい」]し)/に[際「さい」]しての => At the time of A (which starts now).. N2
Time, Situation
させてあげる => (Allow) N4
Allow
(さ)せてほしい => Please let me do N3
Allow
いささか => a bit N3
Evaluate
さしあげる => Give B to A (A is a third party, not yourself) N4
Give and take advice
...てあげてください => to do for; to do a favor N4
Benefit
ふしがある => Seem N2
Speculation
あるいは~かもしれない => Or maybe... perhaps N4
Line up, list