What would you do in this living situation?

I'd like to receive some opinions and even advice, if you have some.

I'm a 52 year old woman, currently on disability. I moved out west to become roommates with a friend i'd known online for 10 years. I live in a room (which is a drywalled, finished garage with a big picture window), and it's very nice. I pay rent, keep my area clean and help around the house.

A few months ago, i went back home to help my son and his family with a crisis situation. All is well there now, and i've returned to my home.

Since i've been back, my roommate can't be anything but grumpy and aggressive. The other day we were taking our dogs out for a run, and on the way there, they started whining. She immediately slammed on the brakes. My dog went flying into the dashboard. Fortunately they were ok, but my back has been killing me since. I told her what i thought of her little stunt, and she said, "ok go on, tell me all about it" in a smug way, as if it were my fault and as if slamming on brakes for no reason is normal.

On the way home, she tail gaited the car in front of us (down a twisty mountain road).

She's been mean, snappy and a pain in the butt in general. She has great expectations of me, as well. She expects me to sit upstairs in her stinky living room (she smokes and never cleans) and watch tv. I'm not that big on tv, and hate cigarettes, so i don't do it.

She pouts, and whines and complains about "being alone all the time"... when her actions and habits are repulsive.

Last night, she went to the grocery store and bought me all sorts of food - as if it would make up for the abuse, or make me want to gravitate upstairs to her smelly living area.

I've been trying to adjust to her ways, but she wants someone to control and she thinks that constitutes a friendship. We all know it does not.

I don't have the means to get another apartment. I've given all my furniture and household belongings to my kids. I was thinking that, if i might talk with a social worker, they could help.

Of course, i have every intention to pay rent, and save money for a deposit, etc. But i can't afford $1000 a month.

Any other ideas?