Strange how ...
There was no tribute from Tom Hanks on her passing !
Probably doesn't want to bring attention to bachelor party that nowadays he's probably horrified he starred in.
He was in one film with her and they were barely in it together. They probably had very little interaction. Why would he say anything?
Also, the movie was a pretty big success based on its low budget. Why would he ignore it?
I think they would have had a lot of interaction on the set , during rehearsals and actually filming !
I tend to think he doesn't want to ever acknowledge he was in such a movie and bring attention to it given his status in Hollywood !