Yes, obviously do not threaten the court thing until they have said no they aren't going to pay!!

I too have a 3.5 year old who no longer naps at home. She is in preschool 2 days a week in the afternoon and can't nap there. I do give her a nap here if it's needed and I just let mom know cuz then she pushes bedtime back a bit for that night. My daycare is in my basement and I have a video baby monitor. The 3.5 year old and I come upstairs for nap time and she gets to watch a bit of tv while I have my lunch and a break. Then after about an hour she is allowed to play with some of the special toys I bought for her (laptop, tag reader, lite brite). I had to change my schedule and routine a bit to accommodate a non napper but now, it's a breeze! I still get a break and she isn't disturbing my nappers. Maybe something like this could work for you if you get another non-napper?

(Thanks to the suggestions I got here on my napping thread ps. my 2 year old whose mom didn't want napping anymore is back to her regular sleep pattern at home so now mom said she can nap again LOL )