It's difficult to say whether or not thal minor has affected your daughter's growth, as genetics plays the major role. However, I would suggest some tests to see if there is also a nutritional deficiency. Most important is the vitamin D level, as calcium and other minerals are not well absorbed when D is low, and D deficiency is probably the most common vitamin deficiency in today's world. Anything below a level of 35 is unacceptable and a minimum level of 50 should be the goal. I would suggest a complete blood count, CBC, along with testing of folate, B-12 and D levels. All are simple blood tests and will help to determine if correction is needed.