Nobody is saying what she is doing is explicitly illegal. But it's abundantly unethical and, imo, a clear abuse of power. Her tone deaf response in this story only adds fuel to the controversy.
Also, $60k isn't that much, considering Wyden usually raises between $4 and $8 million during a reelection year.
My guess is that he would be more swayed by the fact that Nike is one of the largest employers in Oregon.
Like it or hate it, this is the system we have, I don't see any evidence that Wyden is being bought off any more than any other Senator that accepts campaign donations from special interests (which is all of them).
That's about the foreign emoluments clause (which already applies to other public officials including Congress), not the Presidential (domestic) emoluments clause, which is about the President getting money or other material benefit other than those legally due to his office from the federal or state government (which was also an issue with Trump's DC hotel, for many reasons, just not “foreign leaders staying there”.)