The cast of Comedy All-Stars 5 with Joan Rivers - 1991 includes: Laura Reed as Ensemble
No. Ms. Chen has been married twice, and is currently still married to her second husband (of twenty-one years), cardiologist Peter Hui. The two live in the US with their two daughters.
So, it is highly unlikely that she is lesbian.
Joan Rivers died at Mount Sinai Hospital in New York on September 4, 2014.
The cast of The Joan Rivers Show - 1989 includes: Frankie Avalon as himself Jim Bailey as himself Sydney Barrows as herself Marilyn Borden as herself Rosalyn Borden as herself Tova Borgnine as herself Ernest Borgnine as himself Poppy Champlin as herself Leslie Charleson as herself The Cowsills as Themselves Altovise Davis as herself Pam Dawber as herself Richard Dean Anderson as himself Bob Denver as himself James DePaiva as himself Joyce DeWitt as herself Donna Douglas as herself Tom Eplin as himself Greg Evigan as himself Shirlee Fonda as herself Annette Funicello as herself Geoffrey Giuliano as himself Steve Guttenberg as himself Deidre Hall as herself Richie Havens as himself Florence Henderson as herself Bob Hope as himself Telma Hopkins as herself Raul Julia as himself Kent Kasper as Himself - Stand-up Comedian Sally Kirkland as herself Paul Kozak as Kozak The Magician Patrick Macnee as himself Donna Mills as herself Liza Minnelli as Herself - Guest Gary Morton as himself Jack Mulcahy as himself Nichelle Nichols as herself Tony Orlando as himself Tamayo Otsuki as herself Dolly Parton as herself Rain Pryor as herself Linda Purl as herself Robert Reed as himself Joan Rivers as Herself - Host Katey Sagal as herself William Shatner as himself Marc Summers as himself Nancy Travis as herself Joyce Vincent Wilson as herself Cass Warner as herself Dawn Wells as herself Stephanie Zimbalist as herself