Final answer:
Queen Iseult discovers Tristan in the forest through a secret signal involving carved messages or arranged branches, a method reflecting their need to conceal their love.
Step-by-step explanation:
In the medieval romance "The Honeysuckle Chevrefoil", Queen Iseult discovers that Tristan is waiting for her in the forest through a secret signal they had arranged. Tristan carves a message on a wooden stick or arranges branches and leaves in such a way that when Iseult passes by, she understands he is near. This subtle communication method arises from their need to hide their forbidden love and is a testament to the deep bond and understanding between the two characters. The story itself does not appear to be referenced in the provided passages, so the details of her discovery in "The Honeysuckle Chevrefoil" are based on the traditional versions of the Tristan and Iseult legend.