Possibly. It depends on whether she had enough work credits to be insured. If she did, your children may be eligible for benefits. Apply for survivors benefits promptly because benefits are generally retroactive only up to 6 months. You can apply by calling Social Security's toll-free number, 1-800-772-1213.  People who are deaf or hard of hearing may call Social Security’s toll-free TTY number, 1-800-325-0778, between 7 a.m. and 7 p.m. on Monday through Friday.