"Nancy" was the only British ship remaining on the Upper Lakes. On 5 October, as Captain MacIntosh returned to the Detroit River, he sent some of the crew ashore to discover the situation. A storm blew up and MacIntosh entered the river anyway, as his anchors and cables were defective. A group of American militia on the river bank demanded that the schooner surrender. Instead, once the wind allowed, MacIntosh weighed anchor and sailed back up the river and into the lake. Although two American armed schooners and a gunboat were lying in wait for him further down the river, "Nancy" was damaged only by musket fire from the shore. On Lake Huron, the schooner was further battered by storms. Her sails and cables were too badly worn or damaged to withstand any more bad weather, so she sailed to Sault Ste. Marie, where she was laid up, and refitted by her crew during the winter. By recapturing Detroit, the Americans had cut the principal route by which the British at Fort Mackinac and other posts in the North West were supplied. During the winter, the British opened an alternate route overland from York on Lake Ontario via Yonge Street to Holland Landing and the Holland River. From here, the route entered Lake Simcoe and led to the head of Kempenfeldt Bay (Barrie) where Nine Mile Portage led to Willow Creek, the Nottawasaga River and Lake Huron. Lieutenant Colonel Robert McDouall reached Fort Mackinac via this route on 19 May 1814, to take charge of the post and the surrounding area. McDouall was accompanied by Lieutenant Newdigate Poyntz of the Royal Navy, who took charge of the naval establishment on Lake Huron, which essentially was "Nancy" only. (MacIntosh was retained as a pilot.) Plans to turn the schooner into a gunboat were discarded as unproductive, and the ship continued as a supply ship during that summer, making three round trips between the Nottawasaga and Mackinac. During one of the ship's supply trips to the Nottawasaga, in July 1814, an American force left Detroit, intending to recover Fort Mackinac. Their frontal assault was defeated in the Battle of Mackinac Island. However, they had learned of the location of "Nancy" from a prisoner, and three of their vessels proceeded to Nottawasaga Bay.