With the new policy that the day hike permits are recommended and not required, your friend should be fine to go up on the day you had the permit for. If it is for an overnight (and permits are still required) your friend could take that permit to the Visitor center and explain the situation and most likely the camp site that the permit was issued for could be transferred to them depending on the availability/wait list (if there is one) etc.
AmazonSmile is a simple way for you to support SGWA every time you shop, at no cost to you. AmazonSmile is available at smile.amazon.com on your web browser and can be activated in the Amazon Shopping app for iOS and Android phones. When you shop with AmazonSmile, you’ll find the exact same low prices, vast selection and convenient shopping experience as Amazon.com, with the added benefit that AmazonSmile will donate 0.5% of your eligible purchases to SGWA. Simply go to smile.amazon.com and choose San Gorgonio Wilderness Association as your charity.