Among the changes, PCH agreed to modify is mailings to eliminate any suggestion that buying magazine subscriptions or other products from PCH increases the likelihood people will win and that the more they buy, the better their chances.
Also, the part I'd modify is giving Bella a little more vampire ability other than just "blocking" the other vampires abilities.
That is, hyphenate when words in a phrase modify another work, not when they don’t.
All elements of expression modify each other, so that no mere rule can cover all cases.
For to try to make this phrase modify the verb tadhshe 'at the beginning of the sentence certainly removes it far from the word modified.