Girls after childbirth have been going through it for 7 months now, when…

Girls after childbirth have been going through it for 7 months now, when the baby was 3 months old, hair started falling and hasn't stopped since. She has been taking vitamins, doing masks, buying ampoules from Italy, but new hair is growing, but still falls out! Has anyone had a similar situation? Could something have helped and how long did it take for the hair loss to stop?