If your mother doesn't have skype installed she wouldn't get this message. If she does, I would presume she knows what skype is for. Additionally for the big

If your mother doesn't have skype installed she wouldn't get this message. If she does, I would presume she knows what skype is for. Additionally for the big system-level intents there is an "always use this action" which is useful so you don't have to repeatedly tell it to use the phone app to place phone calls.