“Show don’t tell” is not always a necessity in good writing- there are many classic works in which a character is described or his/her situation explained in a more show-oriented format. I’d say that the success of either method depends on the skill and technique of the writer. I’ve read terrible books using both methods.
After all, “she shook her bouncy brown curls in frustration and there was an angry look in her hazel eyes” isn’t necessarily good showing either.