Sorry this answer is late,
BUT you can figure out her address by going to www.stalktounlock.weebly.com. Ik, i know it sounds fake but it really isn't. I actually used the website for ariana's address too (dont worry, im not a stalker ive never been to la either) and they do the work for you in a matter of time!
Im serious, it works. At least it worked really well for me :)