<human>: Can you give me the gist of the text in a nutshell?

We live in Florida. Basically my mom married this guy about 5 years ago and shortly after we found he was an alcoholic. Back then it was somewhat bearable but he did have occasional outbursts of anger where he would just yell at my mom for an hour or two when he was at the peak of his drunkenness. Nowadays, his alcohol intake is through the roof. From the moment he wakes up he has at least 1 or 2 drinks and when he gets home from work he will have 6 to 8 drinks until he is completely shitfaced. He will become extremely unbearable and be verbally aggressive against my mom and sometimes me. I won't go into too much detail but it is not possible to have rational conversation with him (aside from him drinking all the time, he is growing old and the alcohol seems to have deteriorated his reasoning). Also, he won't quit alcohol as he claims it is the only thing that gives him a good quality of life. My mom and I need to leave and it needs to be soon because the ship is about to sink (not only are we seriously emotionally affected but financially he is racking up massive debt). She is going to make an appointment to see a lawyer as soon as possible but I want to get an idea of what our possibilities are. 

Here is a summary. They own two houses (one where we live in and another one that they rent). Both houses are under his and my mother's name. Also, they don't have any kids. Some relatives in Florida have offered us to live with them. Could we just leave while he's at work and then get a lawyer to go through with the divorce? The main concern is that my mom is going to need her share of the houses in order to survive and eventually get a small place of her own. Is this a viable option? Or are there better options? Any help is appreciated.
<bot>: Stepfather is an alcoholic and the situation is out of control. Can me and my mother just leave and have a lawyer go through with getting her fair part of the properties they own? Any other options?