This is the only Mildred in the 1901 census:

Lonan, district 6, schedule 3, South Cape
Margaret Corlett, wife, married, 31, Maughold
William J, son, 8, Laxey
Sarah I, daughter, 7, Laxey
Robert D, son, 6, Laxey
Margaet E, daughter, 5, Laxey
Stanley, son, 3, Laxey
Freda, daughter, 2, Laxey
Mildred, daughter 6 months Laxey
Catherine A, mother, widow,74, Maughold

The Head of Household was away on census night but was probably William, b 1854 who was with the fishing fleet.