My 3 year old female, after spending 3 weeks roosting on the cable box, has decided to take root on the upstairs bannister railing! I'm not even worried about her claws digging in the wood, I'm worried because she loses her grip in her sleep and falls to the ground! It's at least a 15 foot drop (10ft ceiling + bannister height) At first I didn't think she'd really fall, that if she started she'd wake up and catch herself but she didn't! I had put a folded quilt on the floor below and it cushioned her fall a little. I thought she learned her lesson, she came to bed with me, but while I was asleep I heard a thud and sure enough she fell again! I was terrified she was badly injured, even after she ran back upstairs. I pulled all the pillows off the couch and lined the fall zone, but this cannot keep up for long. While I was watching TV I saw her fall, head and shoulders first, not feet first, but landed safely on the cushions. This is insane but she runs right back and does it again! I even tried locking her in one room but she's frantic to get out. I know in a couple weeks she'll choose a new roost but this is making me a nervous wreck and I am afraid she'll die or be badly hurt before then. I can't sleep and there is no way I can go to work and leave her like that. Am I going to have to lock her up and let her howl all day and night? Is there anything I can do to discourage her? Obviously the falls were not enough to do that as I had hoped. Any advice for this strange problem?