Be careful conditioner washes I think are best when you are not wearing a sew in. Braid spray may be best to keep hair moisturized without so much build up.....Too much conditoner will weaken the braided hair, under the sew in' and the weave thread and weave hair will make chop suey out of her real hair when minimal tension is applied ( ie combing, brushing, styling..etc) she would have to dilute the condiotioner like crazy and Air drying is NOT!!! I repeat NOT!! an option. She will have to sit under a hood dryer no less than 1 hour and half and even then she may have to take the hand dryer to the hair to be sure the hair is not wet in between. Wet hair will matt, break and in some cases become moldy, stinky and stringy...ScARED YET! I speak from experience..I'd tell her to tell her daughter to not make conditioner washing a habit when you have a sew in.