My 10yearold daughter has red in her urine, is this a sigh of her period\puberty,or health problems?

Well, red in the urine can be a sign of a UTI (urinary tract infection), but it also could be her period, keep in mind though, if it's her period it probably continued even after she went to the bathroom, i would suggest taking her to a doctor soon though if you assume it might be a UTI or any other health problem.