could it be better cause there were never any males near it
it was probably a few seeds created by self-pollenation, and you came across one. the seed for sure is a female plant (you already stated its female). And because its self-pollenated it will be identical to its mother.
as for can it be better, it all depends on how well the guy grew it. If he grew the bud to its full potential, then the answer is no, if he did a half-ass job with growing the stuff, then the answer would be yes.
Quality of the buds largely relies on how you dry/cure also. so if you dry/cure at optimal levels (such as temps/RH) then you can very well have better nug then what you got it off of.