Now she’s grieving.

The mom accused of poisoning, drowning and then gassing her two kids to death in a Bronx apartment asked for permission yesterday to attend their funeral — and was promptly denied by a judge.

It was also revealed during the Criminal Court hearing that schoolteacher Lisette Bamenga, 29 — who pleaded not guilty to the July 5 murder of 5-year-old Trevor Jr. and 4-month-old Violet Lily in the family’s Parkchester apartment — plans to use an insanity defense.

She is blaming her philandering husband, NYPD cop Trevor Noel Sr., for driving her crazy.