DD - 4 months - has recently decided that she only wants me at bed time. DP has tried getting her to sleep but she screams but stops as soon as I hold her. This wouldn't be a problem normally as I put her to sleep all week because DP works fairly late but I was hoping to go my works Xmas do in December but don't feel like I can leave her if she's going to scream for hours and not sleep. Any suggestions?