I love me some irony....

[Jim B]

Author of How to Murder Your Husband charged with murdering her husband

Is that even irony?

[mattiooo]

Is that even irony?

Absolutely.

[Jim B]

Absolutely.

No, it isn't.

https://www.dictionary.com/browse/irony

irony1
[ahy-ruh-nee, ahy-er-]

noun, plural i·ro·nies.
the use of words to convey a meaning that is the opposite of its literal meaning:
the irony of her reply, “How nice!” when I said I had to work all weekend.
Literature.
a technique of indicating, as through character or plot development, an intention or attitude opposite to that which is actually or ostensibly stated.
(especially in contemporary writing) a manner of organizing a work so as to give full expression to contradictory or complementary impulses, attitudes, etc., especially as a means of indicating detachment from a subject, theme, or emotion.
Socratic irony.

She didn't use words to convey the opposite meaning of what literally happened. She a book titled How to Murder Your Husband and she literally (allegedly) murdered her husband. Not the opposite. And rain on your wedding day isn't ironic. It's just bad luck.

[mattiooo]

You left one out:

a state of affairs or an event that seems deliberately contrary to what one expects and is often amusing as a result.