The answer comes before Toph can even say a word.

"Toph!!" The name echoes through the garden -- a man's voice, followed by another. "Toph!"

"Toph!" Now a woman's, slightly nearer. Footsteps emerge within the range of seismic sense -- though who knows how far away that is?

Toph scrambles to her feet, sliding in the loose mud. She recovers her balance, half-walking, half-crawling towards a large clump of reeds to hide.

Korra may want to do the same.