Sorry to hear of your loss. - Where monthly premiums have been agreed and are being paid for any annual contract of insurance, it is normal practice for insurers to charge for the full annual premium where a claim on the policy has been made. Although it is insensitive in your case, the act of being humane is not usually of paramount importance to the insurance companies interests.
This applies equally to car insurance where someone has been paying it by direct debit, then makes a claim because the car was involved in a traffic accident resulting in the car being a 'write off', the full yearly premium is still charged and obtained by the insurer one way or another.