Have you had a reply from them yet, clarifying what you are supposed to do? And how is it going about getting the time off to go to court? Surely in your situation there is no way that a boss could stop you? I think I would quit my job if they tried, rather than lose this possible chance to help find your horse.
Isn't this legal stuff horrible when you don't know what you are expected to do, what the next step is and everything feels out of your control! I just found out yesterday that for my court hearing in 3 days time I had to write a document by today, refuting claims the other woman had made about why she should get special treatment from the court. How on earth could I do my best in such haste? How on earth you (or I) supposed to be able to fight best for what is needed when you don't even know what is expected or even what steps are open to you??? It's so confusing and you feel so helpless! I am feeling for you on Dec 2 (in the US is that 2 days or 3 days from now?).
Is Rescue Inc still on the scene? And media still interested?