My SIL tried control crying and it worked for her after a great deal of stress and sorrow however after a few months when her daughter reached her next big developmental milestone she stopped sleeping through again. AFAIK of all the people who do control crying only a tiny minority find that it works as a long term solution. We have 2 bubbas who both wake up through the night so we've divided them up. I get up for Imran and DH gets up for Yasin. I think that you will find that a kick in the shins will make your DH more likely to wake up when Lucie cries.