My 13 year old granddaughter has been having memory loss---forgetting words, can t make a complete sentence, has missed place things,walks with a bit of a limp . This has been going on since last yyear. iT s gotten progressively worse now. She s very blah. She was a very upbeat person, talked, laughed. She has been taking dancing lessons since 5 years of age. At the end of the year concert she doesn t remember some of the dance routine. She has HAD MRIS---ALL NEGATIVE. Is there something you could suggest that we should do or look into? Thanks