Whaaaat?

We'll see.

Asked if she could see herself endorsing Trump if he wins the nomination, Collins replied: “I do not at this point.”

[...]

Collins said she didn’t formally endorse Haley at the outset of the race because she was friendly with other candidates like former Vice President Mike Pence, former Arkansas Gov. Asa Hutchinson, Sen. Tim Scott (R-S.C.) as well as with Haley and “didn’t want to choose among them.”

  The Hill

So what's stopping her now?

And "at this point" is her "out". Like I said. We'll see.