Wait a minute . . . . . .

[Dakota]

Regarding #1, How's this (both for ASA and NFHS):

If the deflected batted ball moves in such a way that the runner had little or no chance to avoid, then obvious intent is required.

If the deflected batted ball moves in such a way that the runner has ample time to avoid the impending play being made by the defense, but just continues running anyway, the the failure to make any attempt to avoid is intent.

In between, judgment on which way it goes, with the benefit of the doubt to the runner.

Regarding the broader question on taking a ruling from another book to cover "silence" the the book being used, that is proper if the books are generally aligned, as ASA and NFHS are (not perfectly aligned, but generally aligned). Example: Safety base rule in NFHS (although with the dumbing down / complicating of the rule by ASA this year, NFHS may need to actually do something.)

Regarding #2. I disagree with the ruling.