I'm pretty sure she would eat most of the traditional sweets given out on Nightmare night. I would have to disagree with you on the Smarties though. Either the chocolate coated in a hard shell or the little sugar disc things are delicious and I would never give those away.
I suppose in the quest of friendship, or in general happiness. I wouldn't give out too much candy but I would want to make others happy on such a momentous occasion.
I'm unfortunately too old for trick or treating. Also Time value of money so I spend like.... 2 minutes of getting Candy only costing me 20 bucks is much more suited for me.