Well the tadpole does not seem to be much of a threat in the whole story. Besides, once you figure out that she is a hag you deduce that she can remove it. Still it is a sidequest, something we've found more pressing than the main story for decades.

My son has been kidnapped? I must rescue him at once, but this settlement needs my help first as well as two hours worth of playtime hammering wooden planks into place. Yes I am the reborn god and only I can recover these precious artifacts to destroy arch villain, but I need to move up in the fighters' guild hierarchy so let me kill some rats first.