Here she is with John in Maldon 1861:

Surname Forenames Age Piece Folio Parish
CROW ELIZABETH 66 1089 102 WDW
CROW JOHN 67 1089 102 WDW
Here are the other Crow(e) from Maldon 1861:
CROW ANN 76 1090 64 MDP
CROW ANN M 21 1090 53 MDP
CROW CHARLES 7 1089 126 PRL
CROW CHARLOTTE 50 1090 169 LTM
CROW ELIZABETH 43 1090 65 MDP
CROW EMILY 1 1089 126 PRL
CROW GENERAL M (M) 72 1090 64 MDP
CROW GEORGE 39 1089 126 PRL
CROW GEORGE 12 1090 65 MDP
CROW HARRIET 25 1089 63 CNT
CROW ISAAC 79 1089 100 WDW
CROW JANE 4 1089 126 PRL
CROW JOHN 59 1089 66 CNT
CROW JOHN 43 1090 65 MDP
CROW JOHN 15 1090 65 MDP
CROW JOSEPH 50 1090 169 LTM
CROW MARY ANN 5 1089 126 PRL
CROW SARAH 28 1089 126 PRL
CROW WILLIAM 33 1090 53 MDP
CROWE CHARLES 73 1091 15 TLD
CROWE ELIZABETH 69 1091 15 TLD
CROWE ELLEN E 4 1090 182 GTM
CROWE SUSAN 46 1090 182 GTM
CROWE THOMAS 56 1090 182 GTM
Isaac is now on his own! He sure seems to be a rellie to me....shame no-one else is with him in 1861!
These may help to finally piece together the
mystery? Tell me more, I'm intrigued now.
Lol,
Geoff.