When your mishpacha lights at home when you wont get home until very late, are the being motzei you? If yes, you dont need to wake anyone up. If they are not motzei you, the question stands, unless the halacha to wake someone up nly applies when you need to be motzei them, because they didnt light. In that case, of course wake them up, its for their benefit inherently, as otherwise they miss this mitzvah.
Anyways, it is very possible that the entire way this mitzvah was set up by chazal, was without a problem of gezel shaina.