The Gilmore Girls star remembered the witty card the "Friends" star included as well.
Keith Morrison married Perry's mother in 1981 and had known him since Perry was 12 years old.
"I think he was the most talented of a very talented group of people..."
"I can imagine, from their side, they’re mourning someone who was still very close to them."
The Morning Show actor previously shared an emotional tribute to her former Friends co-star.