Tuck Triumphant

With her knock-knees and braces, ``wilting lily'' Helen Ogden never thought she could be an advocate for hard-luck cases. But training Tuck, her blind Labrador, to consent to be led about by Lady Daisy, a German Shepherd guide dog, was a great confidence booster. Now she's facing an even greater challenge: to convince her family to keep the adopted six-year-old Korean boy they have just discovered is deaf. Building upon the events of The Trouble with Tuck , Taylor has again succeeded in rallying dog lovers to the cause of the blind hero in this thoughtful yet action-packed sequel. Children are likely to overlook the somewhat obvious plot devices and the occasional unfortunate racial stereotype in exchange for Helen's exhilarating, fierce loyalty for both her dog and her helpless brother. Ages 8-14. (Mar.)