Attendance Allowance will remain in payment as that is paid to the disabled person. With regard to the State Pension there are various categories, the common ones being A,B and BL. The Cat A is based on personal National Insurance (NI) Contributions and the B and BL are based on the spouse's NI. The chances are, the MIL receives a Cat BL pension which is about 60% of the full basic pension. If the late FIL had a full contribution record, the widow will be awarded a Cat B pension and receive the full, basic pension rate.