Her status as a daughter of Uriah Cottle and Cynthia “Sinthy” Jones is not proven. I’ve assumed it on the basis that Uriah & Sinthy lived near the Hezekiah McDaniel Sr. family, they have a gap that fits in the births of their proven children (between John b. 1829 and Melissa b. 1834), and most significantly, Hezekiah Jr. & Nancy Cottle named their first daughter Cynthia, and one of their sons Uriah, which is not a very common name.

Morgan Co. marriage book 1, p. 100, records marriage on 23 Aug 1849 of Hezekiah McDaniel and Nancy Cottle, by S. R. Turner.

1850 census of Morgan Co., Ky, lists as family #164 (next door to his parents):
Hezekiah McDaniel, Jr., 23; Nancy, 19. Both born in Kentucky.

1860 census of Rowan Co., Ky, lists as family #399:
H. McDaniel, 35; Nancy, 25; William T., 9; Cynthia, 7; James B., 5; Uriah, 2; Elizabeth J., 1/12. All born in Kentucky.
(This is from a published transcription. The “William T” may really be “William F.”)

1870 census of Mason Co., Ky, Lewisburg precinct, North Fork P.O., enumerated 5 Aug, lists on pp. 32-33 as family #189:
McDaniel, Hezaki, 45, farm laborer; Nancy, 40; Wm, 19; Cyntha, 17; James, 15; Euriah, 12; Elizabeth, 10; Martha, 7; Nancy, 5; John, 3; Mary, 5/12, b. Dec; Epperhart, Dan’l, 37, carpenter. All born in Kentucky.