She mistook it for a garland and reached out to grab it. However, upon seeing a sword there, she became frightened.

This couplet describes a moment of mistaken identity that turns into fear. Someone approaches an object, thinking it's a beautiful garland, something gentle and inviting. With this pleasant thought, they reach out to grasp it. However, as they get closer, the true nature of the object is revealed: it's not a garland at all, but a sharp, dangerous sword. The sudden realization of this hidden danger causes them to recoil in fright. It's a poignant reminder that appearances can be deceptive, and what seems harmless from afar can sometimes be quite perilous up close.