Hey Donnaw,
5 months is a great achievment , no one can take that away from you . You fell off the sober bike ... there is no reason to call a halt to the whole sober journey because of that.
get yourself back on and only look back to see if there is something useful to learn about how you ended up falling off .
Kids are very tough and accepting , i'm sure your daughter loves you very much .
Bestwishes, M