Very truly yours.
The influence is unquestionably hers.
This can't be exclusively mine.
The likeness is unmistakably his.
I'm going to put it in the nicest way possible on the chance it might help me to avoid further downvotes on this answer of mine, o ye cavemen ... I mean, nice generous people ...
I agree with the OP that adverbs can absolutely modify pronouns. There's absolutely no reason why they shouldn't.
The OP suggests I should put it in "a smarter way." Okay, here goes:
Harmony is very smart. Which is why it always takes precedence. Once it has established itself, being smart and all, a bunch of nerds rush in to make up some rules that profess to reflect this harmony, but it never really works. Harmony is pure. Rules are often stifling and oppressive. Nerds are hardly ever smart.
O Reader! Bruder! You're smart. You're not a nerd. Please don't down vote this answer! Smart people should stick together!
I'm not quite certain what this modifying business is all about, because I don't even know what an adverb or a pronoun is, and why should I, it's beneath me. But, being smart, I don't admit to it. I pretend it's not beneath me. As the poet said, I'm sufficiently proud about knowing something to be occasionally modest about my not knowing everything. Or something to that effect.
I'm also quite drunk right now. I have a nasty cold, but I'm smart, which is why I'm drinking good cognac instead of taking stupid disgusting pills. It may not be as healthy, but it sure as hell is a lot more enjoyable.