After you file

I was in court earlier this week. My ex-wife is supposed to allow me to claim 2 of our 3 sons per our 2012 court order.  I had to get my attorney involved as we are still waiting (waiting since 1/31/20 as Jan 31 is the deadline on our court order for her to sign the form). She did sign for 1 son in June 2020, but refuses on the other.  We have another court date in late August now because she was a no-show to our court date earlier this week but what penalties can be brought against her? She did claim the other son on her taxes for 2019.  I am asking for attorney's fees too for defiance. We have been divorced since 2012 and this is the 2nd year she has been resistant in signing the IRS form (she lost in court last year but this was resolved before April 15 in 2018).  Also, I noticed she did not claim any maintenance (over $25k) on her 2019 taxes either.  Thank you in advance.