Along with two photos of McNamara, Oswalt wrote, “A beautiful friend. She opened her heart and let me in...”
McNamara died suddenly last April while she was asleep. Oswalt later revealed her cause of death was a combination of prescription medications and an undiagnosed heart problem.
Since her death, the comedian has been very open with fans about dealing with the grief and pain that followed.
“The reaction to her passing, the people who are shocked at her senseless absence, is a testament to how she steered her life with joyous, wicked curiosity,” he wrote in a piece for Time magazine last May. “Her family is devastated but can’t help remember all of the times she made them laugh or comforted them, and they smile and laugh themselves. She hasn’t left a void. She’s left a blast crater.”