My wife and I have been seperated for most of this year.After suffering a serious heart attack 10 days ago, I've had a female friend of mine, who has had a history with my wife, helping me in my recovery.My wife stopped over unexpectedly the other night, and charged at my friend in a rage.In the few seconds it took for me to corral her, she finally left as my friend called the police.My friend has several mental issues steming from a bad marriage, and has gone too far with her interpretation as to the events of that evening.In the meantime, my wife's version of events don't mesh with my recollection of how the event transpired.I believe I will be a thorn in both parties, if I'm subpoenaed to testify.My problem is that my friend, had she cared at all about the stress this event had on my recent heart attack, chose to just make a report, instead of pressing charges, I wouldn't be asking this question.I can be both a help and a detriment for my wife in this case, so I ask if under the rules of law, if I can be forced to testify against my wife in this matter.