Hi again Larry and welcome back. Glad to hear that the civil case worked out so well from your perspective.
As you probably know, the burden of proof in a civil case (preponderance of the evidence) is lower than in a criminal case (beyond a reasonable doubt). Though the issues with respect to loitering or prowling are somewhat different than those related to a restraining order, this nevertheless bodes well for the criminal case.
"Calendar call" is nothing more than the the calling by the court of all the cases scheduled in that court on any particular day. Cases can be on the calendar for a variety of reasons -- arraignment, status or readiness conference, disposition discussions, hearings on pre-trial
motions, trial itself, and post-trial proceedings such as post-trial motions or sentencing.
Since you have been arraigned, I would expect that this would be a status or disposition type hearing, at which the attorneys can discuss the case between themselves and/or with the court. If no resolution of the case is reached, it could then be set for further status or readiness conference, pre-trial motions and/or trial.
Part of the reason you have to be present for this hearing is the possibility that a disposition could be reached which would require your participation (particularly if it is to be a guilty plea -- which is not to say that I think that likely in your case -- just that the court requires defendants to be present because most cases do result in a guilty plea of some kind).
The fact that your wife had no attorney at the civil proceeding should not make any difference in the criminal case. It, of course, will be handled by the prosecutor and she will not need her own attorney for the criminal case.
As I mentioned above, the fact that the judge denied the restraining order is a good indication that the supposed loitering or prowling isn't much of a case. However, you should be aware that you could commit such an offense without actually creating any danger to your ex-wife, so the elements of the two cases are somewhat different. It still seems to me that the criminal case should either be dismissed or, at the very least, the subject of a deferred prosecution which would ultimately result in a dismissal.
Your attorney should be able to give you a more specific and detailed analysis of the possibilities, as she is able to review all of the reports and knows the local prosecutors and their proclivities.
Thanks again for asking your question here on JustAnswer and for getting back to me with this follow up. If you have any other questions about the situation, please let me know.