The killer whale mother, who made headlines with her display of grief in 2018, has given birth again. But researchers have some worries for her new offspring.

An orca who captured the world’s attention in 2018 after she carried her dead newborn calf for weeks appears to be a new mother again, bringing a sign of hope to researchers.

The killer whale who swam with her dead calf for 17 days in an apparent act of grieving recently gave birth to a new baby, according to Michael Weiss, research director of the Center for Whale Research.