my mom needs your help

okay, my mom is in denial.  she has fine, thin, naturally red hair that she started to dye (about once or twice a year, for two years....but from hair cuttery).  she washes her hair every other day, doesnt use conditioner, blow dryes, and adds about a pound of 'it' hair spray.  her hair is D-R-Y, but she says its 'oily'.  what can i do?  she is afraid to use moisturizing products because she says they weigh her hair down.  what products should/can she use?  what else can she do?  and she will not give up the hair spray.  please help.  thanks