Mother-in-law says Laredo suspect suffered from mental illness

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The grandmother of two children shot by their mother inside a Texas welfare office says her former daughter-in-law had a history of mental problems.

The 10-year-old son and 12-year-old daughter of Rachelle Grimmer remained in critical condition Wednesday.

Authorities say Grimmer shot her children and then killed herself during a standoff in a state building where the family had been denied food stamps.

Mary Lee Shepherd of Montana said Wednesday that Texas officials should have given Grimmer the food stamps and then removed her grandchildren from Grimmer's custody.

Shepherd says she and her son Dale Grimmer, the children's father, had contacted social workers at least three times. She says they worried Grimmer could harm the children.

Rachelle Grimmer and her children moved to Texas from Ohio this summer.