I agree. A clinic that can and will do a thorough neuro exam is a must.
They need t follow up on the "something" and find out what it is. It could be so many things. A referral would be a great idea, but I wouldn't wait too long for it. Proceed anyway. Your Mom sound like a very active person. Too young to be sidelined into the "OFD- Old, Fat, and Diabetic box." Once put in that box it's extremely hard to get a Dr. to pay any attention to your symptoms. And of course that depends on the Dr. At any rate continue to advocate for her, You are doing a great job. And I know it is a hard job!