In the Child Registration List module, the mother's age is displayed as "NA" on the child card, even when the mother's age information is available in the system. This results in incomplete beneficiary information being shown to users.

Steps to Reproduce:

1. Login to the application.
2. Navigate to the Child Registration List module.
3. Open or search for a registered child whose mother details are available.
4. View the child card in the list.
5. Observe the value displayed for the mother's age.

Actual Result:
The mother's age is displayed as "NA" on the child card.

Expected Result:
The child's card should display the correct mother's age based on the data available in the system.