Oh common folks, get a clue - you've got to understand a throw-away line when you see one. Trump's sister is no more likely to end up on the SC than Harriet Myers, and Trump knows that. It is just a way to make noise while not answering a question he didn't want to answer. You think Trump cannot put together a small team to come up with first rate candidates - quickly? If he just wants to do the right thing rather than play politics buy votes and sell out for the highest price it can be done fast enough.
I'm sure he can. Trump's team will recommend people who think like Trump. That's precisely the problem. Trump is no conservative and anyone who thinks he would nominate a Scalia type is delusional. We'd more likely end up with Jesse Ventura type ideologies on the federal courts.