Individual Details

Emily married C. P. Miller. A marriage date of 18 Aug 1840 is given in an online database, but I believe that to be an error - she would have been only about 12 or so, and there surely would have been children earlier.

1850 Census. Adair Co, KY, next door to her father, Hh 82
C. P. Miller, age 25, farmer, b. KY
Emily Miller, age 22, b. KY

1860 Census. Scott Co, Illinois. P.O. Winchester, Hh 688
C. P. Miller, age 36, Farmer, b. KY
Emily, age 34. b. KY
Eliza A., age 9, b. KY
Mary, 6, b. Illinois
Robert 4, b. KY

Emily doesn't appear with the family in 1870 - it's likely she has died. There is some confusion about the which daughters were living, which were deceased, in the abstract of her father's estate settlement, 29 Mar 1865, but she seems to have been living then.
1870 Census. Scott Co, IL. P.O. Winchester, Hh 121
Commodore Miller, age 45, b. KY
Eliza 18, b. KY. Robert 12, b. KY.
Emma, 9, b. IL. Adelia 8, b. IL Arthur ? for age, b. IL

Birth	1830	Kentucky
Death	Bef 1870

Father	John Ashley (1794 - 1858)
Mother	Elizabeth Montgomery (1797 - 1871)
Sibling	Uriah J. Ashley (1816 - 1882)
Sibling	John O. Ashley (1819 - 1890)
Sibling	Obediah Ashley (1821 - )
Sibling	Robert Smith Ashley (1823 - 1896)
Sibling	Elizabeth Ashley (1828 - 1911)
Sibling	Mary Ashley (1832 - 1865)
Sibling	James Montgomery Ashley (1834 - 1907)
Sibling	Minerva I. Ashley (1837 - )
Sibling	Thomas J. Ashley (1839 - )
Sibling	Aden Jones Ashley (1841 - 1914)
Sibling	Sarah B Ashley (1843 - 1880)