He can only vaguely pick out meaning from what she's saying, especially now that his thoughts are drifting. He hears the word "food". He knows "would you like to go" but he doesn't remember what "inside" means.

But the idea of going anywhere with someone else is enough to set him on alert. He jerks himself backward.

"No! No going! I don't like it - don't-" he screeches, sounding genuinely afraid.