This is more of a non-reply rather than a success or failure, but I sent something to be signed back in December with a paid return label and have not heard anything back. I know the last post was a success back in September, so I'm not sure if anything has changed. I do know she is active on social media sites like twitter, facebook, instagram, and vine so I don't know if this non-reply is a failure or just overlooked. I'm writing this post to see if anyone else has had a similar experience lately.
This one (from this post) was my second success from her. she usually sends back fairly quickly, so you might want to try again. but who knows, maybe she's busy with stuff and hasn't had time to sign anything.
You were right, I just got back my items to be signed with 3 extra pictures from her, 2 with autographs and one with a personal message! It took 6 months. I sent it out 12/12/14.