Self Defense Testimony Validity

Summary

The wifes testimony, supported by medical reports and the strangers testimony, strengthens the self-defense claim. However, the lack of surveillance footage may complicate proving the full context. Additional evidence and police reports can further substantiate the case. Consider consulting a local attorney for detailed guidance.

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A man is brought to a hospital with an ambulance, unconscious. There is obvious battering. The only witness was the man's wife. The wife describes the incident as her husband assaulting a stranger on the street with a firearm in hand, initiating a confrontation. Then the stranger beats up the husband, resulting in this circumstance. Is the wife's testimony enough?
The wife's testimony alone may not be enough to determine the full legal situation. Additional evidence such as medical reports, the stranger's testimony, potential surveillance footage, and any forensic evidence would likely be needed to corroborate her account.
Has there been any police investigation or charges filed yet?
Medical reports prove the battery, stranger's testimony confirms wife's testimony, with the battery being self defense against husband's assault, and there is no surveillance footage surrounding the area.
Medical reports prove the battery, stranger's testimony confirms wife's testimony, with the battery being self defense against husband's assault, and there is no surveillance footage surrounding the area.
Given the information, the wife's testimony, supported by the medical reports and the stranger's testimony, can be quite strong. However, the absence of surveillance footage may make it harder to prove the full context.
Has the stranger filed a police report or pressed charges for self-defense?