Is there a way to save the friendly miner bug from going mad?

[Gumba Masta]

Cause I kinda like the little guy.

[jyakimow]

Little gal.

And...

sadly, no.

[Quizer]

The best you can do is not confront / kill her after she stops humming and goes back to mining, and hope that she returns to normal after you beat the final boss and deal with the infection. Sadly, you don't get to see it.

[Gumba Masta]

=(