The man’s discovery of the suicide is his inciting incident all the descriptions prior to that are superfluous in the log line. You are trying to allude to the aspect of irony the story holds but in my mind it is confusing the A plot of him proving his innocence.

Whether he did or didn’t want her dead he will still have to prove his innocence after she kills herself.

Therefore if his goal is to prove his innocence then I think the loglein should describe him the suicide discovery and his trying to prove himself innocent.

i.e:
After his wife commits suicide a man must go on the run and prove he is innocent of murder.

I think the irony of him wanting her dead would be better served if explained during a pitch or in a synopsis.

Hope this helps.

Good points raised above.

I think that in the face of recent TV shows that deal with similar subject matter in period and cultural. The stakes need to be even hire and the obstacles greater than what is described above.

What if her father was the head of a kingdom (emperor, king, governor, or some other high up politician) her father was ousted by a rival and her family banished. Her father was said to be killed but actually sold to pirates and sent away and she was the only one to have escaped capture. Now it is up to her and her alone to restore her father’s power and save the land from the evil rivals.

Other wise I think it would be better to give her a ticking time bomb and raise the tension that way.

After her father was taken by pirates a headstrong girl must assume a male identity aboard a Phoenician trading galley in order to reach her father in time and rescue him from being sold as a participant in a death match.

As mentioned it could be her brother instead and in that case she could be defying her father’s instructions when she goes after the brother to add to her burden. Perhaps there is a plot twist by which she learns that the father sold the brother.

Lots of room for play in this idea well done.

Hope this helps.