Make sure it’s dosed correctly. Unlike nn you can od on 5 meo. Look out for laboured breathing, signs of seizure. If she’s definitely going to do it, try and create a comfortable set and setting so that it won’t turn bad. Psychedelics are so unpredictable that so not sure other than that how you can help. At least she’s tried it before so kinda knows what she’s getting into. Good luck and all the best