The family of Mikayla Capers, the little girl who was stabbed and watched her pal die in the elevator at her run-down public-housing complex, spent the third anniversary of the attack in court — fighting off eviction after NYCHA unfairly hiked the rent.

“Today of all days I shouldn’t be going through this,” Mikayla’s legal guardian and great-aunt, Brigitte Capers, told The Post at Brooklyn Housing Court. “It’s like brutalizing her all over again.”

Capers got a notice on Wednesday, saying she faced eviction since she owes more than $2,000.

She secured the apartment in Coney Island for Mikayla, now 10, after Daniel St. Hubert in 2014 butchered Prince Joshua “PJ” Avitto and wounded the then-7-year-old Mikayla.

But last year, a NYCHA error raised the rent.

NYCHA admitted Thursday this “should have never happened.”

“We apologize to the family . . . and are working as quickly as possible with the owner to resolve the issue,” a NYCHA spokesperson said.