Emma can be found in 1891 as Emma MERTON. (A programming glitch on Ancestry has her indexed as Emma CHAMPINE.)
RG12/798 f95 p8
13 St James Street, Lewes, Sussex
Emma Tester MERTON, Wife, Mar, 23, Framfield, Sussex
John T. MERTON, Son, 3, Eastbourne, Sussex
Basil T. MERTON, Son, 2, Eastbourne, Sussex
Alice T. MERTON, Daughter, 1, Eastbourne, Sussex