Hey OP, I'm glad to know you're still fine for the time being, sorry to hear about what happened to Kai and Jasper. Personally I think the best course of action is to wait until Allison responds, if she does. You have something most protagonists of scary stories dont have and it's a cellphone with a decent connection -- if possible, see if u can use that to your advantage and get police to the place, or contact at least somebody who can come get you safely. If worse comes to worst, distract the creature by throwing an object at an opposite place and make a break for it when it follows the sound. Hopefully you'll be lucky and make it out in time.