Example: She found herself on the horns of a dilemma.*
* “The original dilemma in rhetoric was a device by which you presented your opponent with two alternatives; it didn’t matter which one he chose to respond to—either way he lost the argument. When you did this to your opponent you were said to present two horns to him, as of a bull, on either of which he might be impaled. As the scholar Nicholas Udall said in a translation of a work by Erasmus in 1548, it didn’t matter to which of the two points a person made a direct answer[;] either way he would run on to the sharp point of the horn.” From worldwidewords.org.