I can't imagine that Trump felt comfort d by having Farage visit him to say sorry he had a sore ear, I can't imagine that F is too good as a counselor if he has psychological issues as anyone might have after such an incident
If it was to console him it didn't set a good example, TRump doesn't seem to have done likewise to the family of the poor chap who was actually killed, rather than have a sore ear.
He could have sent a nice bunch of flowers with a card. Wed think differently were it a family member of his who had been shot at.
It's not customary for MPs to do that, any representative should be an official representative unless there are other reasons why an MP should go, perhaps they had been colleagues on an international.programme that sort of thing.
Does NF actually live locally now (and I presume if he does it's not in Jaywick), MPs should have at least a pied a terre in their constituency or nearby, or live close enough to hold regular surgeries and be there to act as a constituency MP.