Thank you! I'm at [Everdale address] If it is relevant to you, it isn't reachable by carriage or in any sort of large vehicle; you'd have to stop at [nearby proper, wider road] and then take the winding path up to the house. Whoever is making the delivery may sense the household wards, but simply knocking on the front door won't trigger them.
I'll confess to a certain interest in the alternate timelines that others seem to have experienced. I'd like very much to read about your family and magical traditions.