She came to Kansas before 1875. She is in Denver without her husband in 1892.

She left Kansas, presumably divorcing William Henry, and traveled to Denver.

Denver City Directories
1892
Jenkins, Isabella N. Mrs., r 260 S. Broadway
1893
No Isabella Jenkins
1894
Jenkins, I N Miss, r 934 Lake av, Highlands
Jenkins, Nina Miss, milliner, G H. Warren, r 934 Lake av, Highlands
Jenkins, Paul, bell boy the Elmore, 1320 Stout
1895
Jenkins, Isabelle N., Mrs., r 2203 Champa
Jenkins, Nina, Miss, stenogrpher, C.W. Hoyt, r 2205 Champa
Jenkins, Paul, student, rms 2203 Champa
1896
Jenkins, I. N. Mrs., r 736 S. Tremont
Jenkins, Nina M. Miss, stenographer, r 736 S. Tremont
Jenkins, Paul, clk, r 736 S. Tremont
1897
Jenkins, Isabel N. Mrs., r 736 Tremont
1898
Frye, Charles H, engineer D & R G RR, r 736 S. Tremont [Isabella married]
1899
Frye, Charles H, engineer D & R G RR, r 736 Tremont
1900
Census: Frye, Charles H., locomotive engineer, 736 S. Tremont
Paul Jenkins is in Luzon, Phillipines
1901
Frye, Charles H., engineer, r 672 S Water
1902
Frye, Charles H., engineer D & R G RR, r 672 S. Water
1903
Frye, Charles H., engineer D & R G RR, r 672 S. Water
Jenkins, Paul, brakeman D & R G RR, r 1437 Champa
1904
Jenkins, Paul, rms 1317 Evans
1905
Jenkins, Paul A., brakeman D&RGW RR, rms 1307 15th
Frye, Charles H., engineer, D&RGW RR, rms 1448 S. 15th
1906
Jenkins, Paul A., brakeman, D&RGW RR, r 1202 Evans
Frye, Charles H., engineer, D&RGW RR, 1645 Welton
1907
Frye, Charles H., engineer, D&RGW RR, r 1342 Stout
Jenkins, Paul A., brakeman D&RGW RR, 625 17th Av.
1908
Frye, Charles H., engineer, D&RGW RR, no residence given
No Paul or Eva Jenkins
1909
Jenkins, Mrs. Eva, music teacher, 1253 Acoma (E.D. 138 of 1910 census) [no Paul]
Frye, Charles H., engineer D&RGW RR, rms 20, 406 16th
1911
Frye, Charles H., engineer D&RGW RR, r 3227 Irving
Jenkins, Mrs. Eva, r. 1253 Acoma
1912 and 1913
Frye not listed
Jenkins, Eva, Mrs. r. 1253 Acoma
1914
All Van Houten descendants have left Denver for California

1880 Topeka, Shawnee, Kansas, E.D. 7, page 14B, stamped page 128B, film T9-0397
82 Sixth Avenue West, dwelling 127, family 138
Jenkins, Wm. H., white, male, age 27, husband, clerk in an office, born PA, father born New York, mother born New York
---------, Belle, white, female, age 22, wife, keeping house, born Indiana, father born New York, mother born Mississippi
---------, Nina, white , female, age 3, daughter, born Kansas, father born Pennsylvania, mother born Indiana
---------, Paul, white male, age 1, son, born Kansas, father born Pennsylvania, mother born Indiana
VanHouten, Josie, white, female, age 27, sister (in law), at home, born Indiana, father born NY, mother born Mississippi
Sapponfield, Barbara, white, female, age 17, servant, born New York, father born New York, mother born New York

1900 Census Colorado, Arapahoe County, City of Denver, Vol. 3, E.D. 94, sheet 5, line 77
736 South Tremont St., dwelling 108, family 115
Frye, Charles H., head, white, male, Apr 1846, age 54, married, first married at 25 (crossed out 34, probably this marriage), born Massachusetts, father born Massachusetts, mother born Massachusetts, engineer on locomotive
Frye, Isabella N., wife, white female, Feb 1857, age 43, married, first married at 25, mother of 4 children, 3 still living, born Indiana, father New York, mother Mississippi
Jenkins, Ada, daughter, white female, Mar 1885, age 15, single, born Kansas, father born Pennsylvania, mother Indiana, at school

1910 Denver, Denver County, Colorado precinct 15, E.D. 120, sheet 11A, ward 9, stamped page 236 “supplemental”
2330 Glenarm Place, dwelling 142, family 267
Fry, Charles H., head, male white, age 64, married twice, this marriage 12 yrs, born Massachusetts, parents born Massachusetts, locomotive engineer, rents
-----, Isabella N., wife, female, white, age 53, married twice, this marriage 12 yrs., mother of 4 children, 2 living, born Indiana, father born New York, mother born Mississsippi

1920 Santa Monica, Santa Monica County, California precinct 1, E.D. 598, sheet 4A
2935 Ocean Front, dwelling 168, family 163 (living with Charles Durlin, family 161)
Frye, Isabella N., boarder, female, white, age 62, widow, born Indiana, father New York, mother born Mississippi

1930 not located

---------------deceased