I'm not sure about where you live, but I was unable to change my daughters name (her request) because her father (that she has seen once in 4 years) said no.
I also agree with the others that you need to stop replying to W when she takes the conversation south. When she makes her digs about your GF, either ignore her or use AS's reply that you pay support and other than that it is your business.
Did she really sell the car? How is she going to get around, with 2 young children, and get a job if she doesn't have to have a car. Is there a chance she is lying?
I honestly believe she hasn't sold the car or the laptop until I see for myself. She could easily just be saying it because she is feeling hurt. It wouldn't be the first time.
M36 W31 S4 S2 T5 M4 BD Jan12 S July12 Recon Sep12-Nov12 ILBINILWY Jan13 OM x 2 in 2013 W wants R July 13 I start D. Jan 14. Meet GF Nov 13 Have I changed enough? Jul 14