She clearly refers to Cruz in that speech.
If you'd like me to cue it up for you, starting at the spot where she does that, I can post it for you.
I saw part of it. I took her praise of Rand to be a bit of an unspoken backhand to Cruz. Also, when she talked about Trump bringing up issues (I’d guess immigration and trade deals) that the others only addressed in response, she was referring at least in part of Cruz. I heard her praise of Trump’s success and ability to buck the system and get stuff done. But I must have missed if she specifically shared a direct comparison explanation for why she chose Trump over Cruz.