That's not Van Buren's husband we've been seeing lately. She divorced her hubby after he cheated on her (he even gave her HPV...which is what caused her cancer. Presumably HE got it from whoever he cheated with).
Frank (Ernie Hudson's character) is her new boyfriend. Her (now ex) husband has not appeared onscreen in many years. I think the last time was way back in season 6, the ep where several characters witness an execution.
As for L&O: LA...they should just use the characters from Boomtown
. Anyone remember that?