Why are you only asking for $30,000 from her 401(k) if she has $300,000 in it? You're entitled to half in AZ, a community property state.
When I got divorced (in AZ) my wife had $400,000 in her 401(k). I got $200,000. I had $30,000 in my 401(k) and she got $15,000.
Do you know what a QDRO is?