Determine Narrator's perspective

They were standing under a tree, each with an arm round the other's neck, and Alice knew which was which in a moment, because one of them had "DUM" embroidered on his collar, and the other "DEE." "I suppose they've each got "TWEEDLE" round the back of the collar," she said to herself. They stood so still that she quiet forgot they were alive, and she was just looking round to see if the word "TWEEDLE" was written at the back of each collar, when she was startled by a voice coming from the one marked "DUM."

Third Person Objective

Right.