Schilling also paid tribute to her family and posted a photo of herself with her husband and daughter.
She first joined Mafs in her home country of Australia and later on the UK version of the show, which airs on E4, but announced last month that she was stepping away from the Australian show to prioritise her family and health.
Channel 4 said in a statement on Thursday: “Mel has become a hugely valued and much-loved part of the Channel 4 family; to many of us she is a friend as well as a colleague.
“Her wisdom, warmth, humour and kindness shine through, and these qualities mean that everyone involved in MAFS, from the producers and contributors, to the viewers, love and respect her as much as we do.”
The channel announced that Mafs Australia expert John Aiken would step in to replace Schilling for the remainder of the latest UK series, which is currently being filmed.
CPL, the production company which makes the UK version of the dating show,
“Mel is greatly loved and respected by everyone at CPL, and our thoughts with her and her family as they face this profoundly difficult time.