I LOVED to see her back. Introduced in Season 3 als Horatio's secret love affair whom he left after a few episodes (Episode "Cop Killer") for inane reasons - she made a decision Horatio didn't like - (Morals is the little sister of hypocrisy - at least when it comes to Horatio.)
Me thinks, if the writers play it right they could turn her into a new nemesis for Horatio. Not in the open - but she could be pulling the strings behind the scenes with well placed intrigues to make life a lot harder for Horatio and his new-found-long-lost-illegitimate-son.
After Walter Resden, Judge Joseph Rattner and Rick Stetler it is time for a new enemy for Horatio. And why not a woman? And if this woman happens to be a former love-affair things might be getting upclose and personal. And that might be very VERY interesting.