[1] Manthey's father, Cyril, was a career member of the United States Army and served several years in Germany.

[1] At the beginning of the game, Manthey was initially sorted into the Ogakor tribe, where she formed multiple conflicts with her fellow tribemates, notably Keith Famie over his cooking skills, which put her on the initial chopping block; she was spared from an early elimination due to her tribe winning the first immunity challenge.

At the season's final tribal council, Manthey voted for Wesson to win over Donaldson as she felt betrayed by the latter.

In 2004, Manthey was cast in the show's eighth season (the first to feature returning players), Survivor: All-Stars,[3] where she started out on the Saboga tribe.

Manthey initially attempted to improve her game by not being overly opinionated; she nevertheless got into multiple arguments at the Saboga tribe camp, particularly with Rupert Boneham during a shelter-building challenge.

The new tribe lost the three following immunity challenges; Manthey surviving every tribal council thanks to aligning with van den Berghe and Vavrick-O'Brien to vote out larger threats in Richard Hatch, Colby Donaldson and Zohn.

After Chapera lost the next immunity challenge, Manthey was initially confident she would be safe as Brkich was a strategic outsider on the tribe; however, a deal struck by van den Berghe and Mogo Mogo member Rob Mariano saved Brkich, eliminating Manthey in tenth place on Day 24 by a unanimous 4-1 blindside.

When a hidden immunity idol sent Apostol home at a double tribal council, Manthey joined Shallow, DiLorenzo and Hantz's alliance in voting out Mariano, Coach and Yates before the two tribes would merge.

Hantz, winning the Day 38 final immunity challenge, successfully encouraged Diaz-Twine and Shallow to vote Manthey out due to the latter's strong social game.