OP I'm sorry this is your situation. I just left and it was hard. I moved into a refuge and waited for a home. I left everything behind and every other day, I regretted my decision. I had no home, no garden. no job, was far from family, friends and everything I knew. Plus I was grieving the death of my sister. But I don't regret it for a second!!! As what we have now was so worth the struggle of leaving.
There are centres specifically set up for the temporary rehoming for pets- for owners who are dealing with domestic abuse.
Certain banks give a fund to help with flee costs. I wasn't aware at the time, but you can always find out.
Is your business something that can be done remotely or outsourced, whilst you're trying to figure your life out.
Don't worry about storage. It's hard to say, but the belongings just don't matter in the grand scheme of things. Your life is worth so much more.
For me I always thought I don't want to be remembered as a statistic, or a shrine on a photo wall, album or in a phone. I wanted to live and not lose my life at the hands of a loser.
There's so much help out there- seek it out. It will be hard- I can't lie. But everything can be gained again, only this time it comes with a strong sense of freedom, peace and no stress. Give yourself a chance. You've got this!!!