If he were human I'd agree certainly but again I don't think it's a very machine-like thing to say. ''Come with me if you want to live'' - IF. Like he's entertaining the possibility that she might
not want to live and will let her have that choice.
It makes more sense for him to state that he has been ordered to protect her and that she must go with him immediately. But, y'know, not cool enough. And Cameron wanted that irony, I guess, of The Terminator saying Kyle Reese's line to Sarah - offering protection instead of life termination
edit - Sorry for the off-topic page.