Where is the person going to carry them? Will they train with either?
In her purse. Hopefully (which I say as no one can make someone get into a habit), she will get into the habit of getting the spray out before leaving where ever she may be, as well as getting her keys out to have them handy. This, at least with my limited knowledge, seems to be about the safest course of action. I hope she will train with both. Again, I can't make her do anything. I just want to be able to give as much information and encouragement to get her to make some decisions about taking her own safety into her hands.