Does Holden have any guilt feelings about Allie? Do you feel this is abnormal in any way, or normal?

Yes, Holden had guilty feelings about Allie. I think this is a normal way to feel this way.

Explanation:

The Catcher in the Rye is a novel penned by J. D. Salinger. The story is told by the narrator and the protagonist of the story, Holden Caulfield.

Holden was impacted by the death of his brother Allie. Holden felt guilty that he did not let his brother go to the lake with him and his friends. This guilt was consumed in Holden so much that it impacted him emotionally. These emotions can be identified in him when he becomes protective of children because he was guilty that he could not save his brother's life.

This is a normal way in which Holden behaved because he behaved out of the grief for his loss of his brother.