should i report to cps?

there's this "girl" who is 17. she had her daughter at 16 and due to all the drugs she was on while pregnant her baby came out effected, the poor baby will never be able to walk. Her mom took custody of her baby due to her being immature. well she is now pregnant again, smoking weed and god knows what else she is on. is there a way i can report her? i really wouldn't want that baby to go through the same thing. if there is still a baby. if i can report it, can it be anonymously? and what would they ask for?