He was begging Wendy to get better quickly, so that he could show her the mermaids.

Of course she could not answer yet, being still in a frightful faint; but from overhead came a wailing note.
"Listen to Tink," said Curly, "she is crying because the Wendy lives." Then they had to tell Peter of Tink's crime, and almost never had they seen him look so stern.
"Listen, Tinker Bell," he cried, "I am your friend no more.

Begone from me for ever." She flew on to his shoulder and pleaded, but he brushed her off.

Not until Wendy again raised her arm did he relent sufficiently to say, "Well, not for ever, but for a whole week." Do you think Tinker Bell was grateful to Wendy for raising her arm?
Oh dear no, never wanted to pinch her so much.

Fairies indeed are strange, and Peter, who understood them best, often cuffed [slapped] them.
But what to do with Wendy in her present delicate state of health?
"Let us carry her down into the house," Curly suggested.
"Ay," said Slightly, "that is what one does with ladies." "No, no," Peter said, "you must not touch her.