I'm sorry to hear that Ashley is still having peeing problems. Here's a great link about litter box problems http://www.catinfo.org/litterbox.htm.

I had a brief period of time where both Storm and my RB Starr were both peeing out of the box and it was all due to stress. My vet recommended that I buy some Cat Attract Litter by Dr. Elsey and it worked immediately. I just added it to the top of the litter that I was already using. I also used the Feliway plug-ins and the spray. I put out more litter boxes and they're all uncovered except for 2 of them. I also put 2 of the litter boxes where the peeing outside of the box occurred and one of them I gradually moved a little bit every day to a more desirable location because it was right by my front door.

Now I use Dr. Elsey's Precious Cat Litter and it clumps very well and it's unscented. I was able to stop using the Feliway plug-ins because over time they didn't really do anything. I have 5 cats and 6 litter boxes and I scoop them in the morning and the evening. They usually only use 3-4 of them but sometimes they will use them all. I hope that you'll find something that will help Ashley. Please don't give up. Good luck.