Did he really end the kid’s life or is he hiding her ?

Hes hiding her and is going to use her as a bargaining chip.

No, apparently he couldnt bring himself to do it after seeing how bad she treated, probably because she probably reminded him of his past( that's what I interpreted). Now he is faking her death to manipulate the uke.

I’m glad she is alive

Yeah me too, I wonder how she's gonna grow under his hand. ( ￣□￣||)