AUSTIN, Texas — Stacey English has modest desires for her 7-year-old daughter Addison: Be able to eat without gagging and move both her arms. But since Addison’s occupational therapist went out of business this winter, the child with a rare genetic disorder has regressed in her fight to do even that much. “I don’t know where to go from here,” said English, who has been unable to find a replacement therapist in their Texas college town of College Station.