How to deal with losing my mom?

I lost my mom on may 22, 2011 and I miss her soo much... She was in the hospital for a month before she died, her brain quit working and a ton more problems... I have two siblings and it's tough... My stepdad is in soo much pain and he crys all the time :/ idk what to do.. I now live at my dads with a mean stepmom and mean brother.. She calls me names and I have no privileges or anything and it's tough... I wish something good would happen but I don't know what or when... I hope soon, what Do I do?