Another Dubai person here - I say do it! The fact that it is a year's contract may actually help you decide - if it doesn't work out, leave after a year and call it an adventure! If it does, your HB can either extend or find something else. Easy!
I love it here and would not return to the UK for all the tea in China. Most of the negative things on this thread are hysterical nonsense. Your daughter would have an amazing life here and you would have the financial freedom to do things that are not possible for most people on an average (taxed) income.
Make sure that your husband's contract allows him to sponsor you and your daughter's residency and includes your healthcare. The healthcare here is superb and so are the schools.
In terms of women's freedom - some of the above posters are laughable. I live alone here (DP still in UK) and I have more freedom than I know what to do with! I have never had an unpleasant experience (unless you count which used to bother me but now I understand is just friendly curiousity and they are not hitting on me!! :-D) Most of my Emirati female friends would be quite offended by the picture painted of them on this thread - that they are some hideously oppressed minority.
In the UAE, I am free to leave my door open all day knowing I won't get burgled and to stroll home at 2am knowing I will be safe. I am also free not to have half my income confiscated and pissed away by the government! Equally if I buy booze (which I can and do!) I know that I am going to be hammered with taxes - fair enough, it's a muslim country.
Also, don't forget the travel opportunities that there are here. A base in Dubai puts you closer to so many amazing places, not just in the Middle East. The Maldives is less than 4 hours away....