No, she only dealt with the people who stayed and were therefore important to the story she was telling. My ancestors instead get the post revolutionary equivalent of "Police beat":
1783 Studholm report on Joseph Clark of Gagetown, Sunbury Co., Nova Scotia (now NB): "[Lot] 36. Joseph Clark has a log house and about 7 or 8 acres of cleared land, which he holds by virtue of a lease from Capt. Spry for 200 acres. Joseph Clark is a very bad subject and a very troublesome fellow." If this is Joseph born Dec 1768, he was 16...
W.O. Raymond had records that are no longer able to be located (at least digitally):
pp. 158-159, Joseph and Widow are two different Grantees. 80 grantees are listed but 64 were before 1765 and 66 before 1783. The other 14 were Loyalists. Initial 64 were from Rowley, Boxford, Newburyport, Haverhill, Ipswich, Gloucester, Salem, etc. of Essex Co.
<!--[if !supportLists]-->· <!--[endif]-->https://minerdescent.com/2012/10/15/new-england-planters-in-new-brunswick/ “The list of the grantees of the Township of Maugerville, …, includes the following names: ... Joseph Clark, Widow Clark. It is possible she was not a widow then and he died later, but that the histories later called her Widow even before he died…
<!--[if !supportLists]-->· <!--[endif]-->… “Above Oromocto Island we find the lots of … Joseph Buber, … and the Widow Clark. Thence to the upper boundary of the township, a distance of two miles, there were at first no settlers, ….”
One of the Joseph Clarks that made it to Bangor (actually Levant), Maine in 1800 was there in 1780's and was with Co. Eddy and Joseph Buber at the attack on Ft. Cumberland. There are records of them in Maine and telling of tales from the river and the war, but scant records of them or their children on the river and none of how they got there.
There are family trees on many sites, but they show the elder Joseph born in Levant 50 years before it was settled, then show him descended from the Clarks of Medfield, MA without any real proof other than birth records of someone by that name at a convenient time to desirable parents.