I found a couple of Censuses

these Census's stated

1900 United States Federal Census
about Ida P Mull
Name: Ida P Mull
Home in 1900: Cumberland Canal, Allegany, Maryland
Age: 2
Birth Date: Nov 1897
Birthplace: Pennsylvania
Race: White
Ethnicity: American
Gender: Female
Relationship to head-of-house: Daughter
Father's Birthplace: Pennsylvania
Mother's Name: Jennie
Mother's Birthplace: Maryland
Marital Status: Single
Residence : Election District 4-6, 22-23, Cumberland Canal, Wills Creek, Cumberland River, Union Street, Decatur Street (Excl. Cumberland City), Allegany, Maryland
Occupation: View on Image
Neighbors: View others on page
Household Members: Name Age
Jennie Mull 33 (widow) 5 children, all living.
Bertha J Mull 12
Henry G Mull 9
Lillie V Mull 7
Bessie G Mull 5
Ida P Mull 2
Milly Kerns 60 (Jennie's mom...so Jennie Kerns Mull)

The mom remarried by 1910:
1910 United States Federal Census
about Ida Perl Mull
Name: Ida Perl Mull
Age in 1910: 12
Estimated Birth Year: abt 1898
Birthplace: Pennsylvania
Relation to Head-of-house: Daughter
Father's Name: Martin
Father's Birth Place: Pennsylvania
Mother's Name: Jennie
Mother's Birth Place: Maryland
Home in 1910: Martinsburg Ward 2, Berkeley, West Virginia
Marital Status: Single
Race: White
Gender: Female
Neighbors: View others on page
Household Members: Name Age
Martin1910 United States Federal Census
about Ida Perl Mull
Name: Ida Perl Mull
Age in 1910: 12
Estimated Birth Year: abt 1898
Birthplace: Pennsylvania
Relation to Head-of-house: Daughter
Father's Name: Martin
Father's Birth Place: Pennsylvania
Mother's Name: Jennie
Mother's Birth Place: Maryland
Home in 1910: Martinsburg Ward 2, Berkeley, West Virginia
Marital Status: Single
Race: White
Gender: Female
Neighbors: View others on page
Household Members: Name Age
Martin Hensroth 50
Jennie Hensroth 34
Irena Hensroth 14
William C Hensroth 13
Agnes E Hensroth 3
Lucey Hensroth 9
Lellie V Mull 17
Bessie G Mull 15
Ida Perl Mull 12

Notice the area's mentioning Jennie Kerns

However I found another Census before then in 1870 that showed Nancy J Kerns, mother Milly Kerns and a Charles Kerns as head of household with a few other children, it marked Jennie or Nancy J as a step-daughter to head of household.

Does anyone have any information about this? Does anyone have any information of death date and location of Jennie or Nancy J and her mother and father?