Why did Mothra sacrifice herself for Godzilla?

Why did Mothra sacrifice herself for Godzilla? Mothra willingly sacrifices herself as she tries to protect Godzilla from Ghidorah’s attack. Godzilla roars in grief for the loss of a comrade, and his rage defeats Ghidora, and he reclaims his role as the Alpha of Titans (well, except for Kong, because from the Godzilla vs. Kong trailer, we know he bows to no one).

Mothra willingly sacrifices herself as she tries to protect Godzilla from Ghidorah’s attack. Godzilla roars in grief for the loss of a comrade, and his rage defeats Ghidora, and he reclaims his role as the Alpha of Titans (well, except for Kong, because from the Godzilla vs. Kong trailer, we know he bows to no one).