When you have a child with special needs (anything from dyslexia to autism) parents need an advocate with the schools to get their child the services that they need to be successful. When you add divorce to the mix, she gets that also. She’s a valuable resource.
You need to build a team of collaborative professionals who can help you know the right questions to ask. If you were renovating your house you wouldn't rely on your painter to install the plumbing... similarly you can't rely on your divorce attorney to know about special needs issues. Whatever makes your case unique, enlist professionals with that specific expertise. Complex tax issues... Divorce CPA. Ten different retirement accounts... CDFA. A child with special needs... an advocate expert in building an agreement that will prioritize and support your child's needs for as long as necessary.