Don't you know anyone that could help you out with a car for a day?

Is there no way you can move out or end it right now - no time like the present?

I haven't been in this situation but when I decided to leave home I went out and did it - found some places worth looking online went and looked, got chatting to someone whilst waiting and he showed me a place that went on a month by month basis.

By the sounds of it you too are still going to be friends and if it hits her hard now her feelings aren't going to change in a few weeks time.