Just cleaning litter boxes...

So, that little victory we had reducing the litter boxes by one has been cancelled by the new litter box in my husband's bathroom.  For the last three days two of the boxes have not been used but the new one in the bathroom has been.  In fact, he didn't think this litter box through.  In the middle of the night, Sadie uses the box but she never scratches in the litter, she only scratches the sides of the box, it's very noisy at 3:00 a.m.  And then she runs to her sisal cat scratching post and does that for a few minutes.  Thoroughly awake now, we put up with her on the bed grooming us.  She's sound asleep on our bed now and I'm tempted to run in and wake her up.  I do use the opportunity to clip some of the big knots she has that she won't let us brush.  Sassy is now spending more time in the bedroom, it's like she can't be parted from Sadie.  No fighting and they both play with the string, just not next to each other.  Also no peeing outside the box that we can find (at least for three days).  Fingers crossed again.