38 CFR §3.950

Marriage is not a bar to the payment of pension or compensation to a helpless child under an award approved prior to April 1, 1944. The presumption, arising from the fact of marriage, that helplessness has ceased may be overcome by positive proof of continuing helplessness. As to awards approved on or after April 1, 1944, pension or compensation may not be paid to a helpless child who has married.