That might be tough. OP is in a pretty remote area in VA......pretty far from anything.
OP-when we talk about "rehoming", we are not talking about selling. It is doubtful you could get anyone to buy this filly.
Can you please explain how it is possible you have even the $15K invested (you corrected the $50K, I believe.)? Some of us are having a really hard time figuring that out. I could possibly see it if she had been in training at a professional trainers since she was in utero........
OP, your filly needs hay today. And tomorrow, Saturday, and for the rest of her life. I am seriously concerned for her wellbeing - if you have enough money to buy a brand new computer and pay up to $125/hr for a trainer you can pay for hay and however much it might cost to get it trailered to you.