hazel, it's time regardless of finances or lack thereof for you to go to individual therapy, imho. i wish i could offer you hope re your hubby. some are willing to meet their spouses in the middle. your hubby has multiple traits that are hindering a loving, communicative relationship. i could offer you advice re his abusive nature but i feel your situation and marriage has gone beyond that. recommended reading men who hate women, and the women who love them, by dr. susan forward.
libarary and/or barnes and noble will have it.
this my take:
he's emotionally abusive to you and your daughter.
he abuses medication-much of the time it appears he's under the skewed influence of drug addiction thus has inappropriate/abusive behaviors.
he doesn't try to meet you in the middle re family concerns, financial responsibility and child rearing.
he is very inconsistant with his tryng to change or improve.

i know you already are aware of my thoughts and opinions. i'm not a therapist so heed my opinions cautiously. i don't know the whole picture. what i do know however is that you've reached out for help here at pc. that is a positive thing and a willingness to look at the relationship and improve your llife.
you deserve a harmonic life. we all do. the fears you may have re leaving him, financial, etc. can be planned out to empower you to possibly move on.
hope my comments may help. please consider/go to therapy.
site to consider
http://articles.moneycentral.msn.com...nd.aspx?page=1