MSQ (Spoiler Warning) - A Breath Of Respite | Should - > Shouldn't?

[Shougun]

Spoiler warning.

In the MSQ A Breath of Respite Elidibus says to Zenos:

"...Hm. Unexpected. Most unexpected."
"That immortality should be within the reach of one with a borrowed Echo."
"You have outdone yourself, Zenos yae Galvus."



Now I was thinking that it might have been intended to be shouldn't instead of should. Because if it's a should then it wouldn't really be unexpected, and you wouldn't really have out done yourself either.

However, if you change should to shouldn't then it all flows with being unexpected and a lauded achievement "oh wow, you reached immortality with THAT? Nice job".

Unless this is some archaic use of should that I don't remember lol. If it was intended to be should then I guess it just didn't really flow to me (which is fine I suppose), goes from unexpected, to expected, back to unexpected while staying on pretty much the same concept/subject .

Thanks for reading

Edit:

After finishing another quest I reread this and I suppose it can make sense.. I still don't love it since they're separated by sentences. I mean if it was "...Hm. Unexpected. Most unexpected. That immortality should be within the reach of one with a borrowed Echo." (in one text bubble) or something like that, then it flows but with the hard separation I therefore read them separately as they're not within the same text bubble.. and as you see I had a brain fart above lol.

I admit it can be right but because of the hard separation I will only commit to half shame and cowering lol. I think the hard separation is where I got caught off guard (and feel "should not" or removing the hard separation would flow, at least for my poor man's brain XD).