Erdan gives her a wry smile which indicates her little jibe was not misunderstood. "You're half-human," he observes, eyeing her ears meaningfully. "You do not experience time as elves do. For elves like myself and Laerdya, little Gwynnestri was born only a short while ago. Had her father been elvish, she would not even be an adult for another eighty years." He sighs, sorrow creeping into his voice. "As it is, due to her mixed heritage, she'll be lucky to live to be one hundred and eighty. You cannot understand that sorrow, my dear."
On the topic of her patron, he does indeed seem to know it--or something unnameable and unknowable like it, at the very least. In fact, Erdan is willing to affably chat with her about nature and/or nameless eldritch things for hours if she so pleases, or up until she needs to leave to visit the Devil's Own. [If you choose to take advantage of this bounteous well of knowledge, you may add either 1 point of Arcana (because eldritch) or 1 point of Nature (because druid) to your sheet.]