Rebith of a Phoenix in the Apocalypse

It's about a young woman getting betrayed by those close to her, her family and fiance, being pregnant and then sacrificed to the undead, like a chesspiece not having it's use anymore... she gets reborn back to three years before the apocalypse happens and starts preparing as well as cut off her ties to her family and boyfriend that would be her fiance later, not wanting to deal with backstabbers. She wish for love but then there is one thing she hopes for, that the man she will love, loves her back and will protect her, not betray her...