I would be deeply disappointed as well. But unlike many Trump supporters, who call anyone who does not support Trump everything from RINOs to traitors, I would just note that I would disagree with her choice and be sorry that she made it, and that such a choice would cause me to be very cautious about any other endorsements she made.
The reason for such level-headed thinking is that we Cruz supporters have confidence in the constitution and in Ted Cruz. The emotions of anger and hate are very far removed from us in part because we know that anger and hate, while normal human emotions, are also WEAKNESSES and therefore anger and hate should be analyzed and then set aside as quickly as possible for cooler, clearer thinking.
And THAT is exactly what you express you will do, and it is the same as me. I wouldn't be angry at Palin (for long, anyway) nor would I hate her; I would only proceed with caution in trusting her further.
You, like Ted Cruz, talk level-headed cool-thinking sense. Trump talks emotional hot-headed angry theatrics with lies to mislead and deceive his listeners.