I'd say probably closer to two days. If she ships it tomorrow you'll probably have it Monday.
Auntie has some magical shipping powers that make stuff get across the country in no time. I don't know how she does it.
She sent me one yesterday and I'm thinking it will be here tomorrow, usually two days for me.
she is in tight with the post master general, that or she perfected the warp drive and figured out how to attach them to parcels.