You can do this Cadence. You weren't even challenging the sale of the home so is it worth hiring two sets of lawyers to argue over a little equity in a recently purchased home? I think not. I hope your lawyer is the reasonable sort. Seems like this should resolve relatively quickly. There just isn't enough at stake to battle over it in all likelihood.
You'll feel better when you speak to the lawyer and know your options. Try not to stress and borrow trouble.