Hi, I think that you will have to rely on friends or family I'm afraid. We don't tend to leave our daughter and on the odd occasion we've left her to stay a weekend with Grandma she's had blood tests every two hours and phone calls several times a day to discuss dosages. For us it is not really a break more of a worry, but understandably our daughter loves spending time with her Grandma so we let her stay.
Perhaps she could go with you and spend some time in the 'kids club'. I know it's probably not the answer you wAnt, but may be it's a compromise so you get some time on your own but you don't have the worry of leaving her and the constant communication back home which may affect the quality of your holiday. leggott