CTL, a Get given by a husband under orders from a non-Jewish court, even if enforcing an agreed civil agreement/prenup, is deemed under halacha to be a “Get Me’usa”, an invalid Get, and the Shulchan Aruch states that the wife remains married and if she has future children with another purported husband using that earlier Get Me’usa they are halachicly deemed to be mamzeirim.
ZD, a civil divorce is halachicly meaningless as to whether beis din is halachicly authorized and able to order a Get be given based on the circumstances.