Looking good! Dont worry about the leaf, shes showing signs that it may be time to move her into a bigger home. 72⁰ is a little chilly. Are you just keeping it by the window sill? That could be good, as the temps are getting warmer. If you're planning on bringing her outside she'll be used to the cooler outdoor temps for now and wont get shocked when you put her outside. Good luck and keep us updated 🙏💪
Edit: I just noticed shes an auto. I dont have any experience growing autos but I heard it's better to start them their final pot size to avoid transplanting and the shock that comes with it. I'd put her in a 3 gallon pot asap before she starts to flower, might slow down for a couple days but you'll see explosive growth right after!