What Haley wants.

I believe Nikki Haley's strategy isn't to beat Trump but to garner as many delegates as she can. If come convention time, she has the second most delegates and a sizable number, she could use them as a bargaining chip, especially if Trump falters and doesn't get enough delegates to win out right. If Trump's campaign explodes, she has positioned herself as the logical alternative. By that time it would be too late for other candidates to restart their efforts.