Sonnet Rewrite

[Mark101]

Hello Leah,
This is a very well written sonnet, I like it a lot. It's well rhymed and the meter is good though not iambic pentameter (the usual meter of a sonnet), you're using a 4/3 iambs meter, and this is kept up very well.
Just a couple of minor niggles for me-

Warrior
His wife, as thin and tensioned as a wire,
gets woozy when the needles puncture him.
She jerks and leaves, her spine a rod of ire, ----------I understand that she is stiff with anger but is this line just a bit too close to "rod of iron"?
because I touched his tubes. Her mouth went grim; --------I'm not liking "went", could "sets grim" be a better choice?  Not sure, anything but went (lol).

now, pacing in the hall, she looks for aid
from anyone professionally trained.
Her anguished face is angled like a blade;
her whole demeanor timid rage restrained.
How can I tell her now about the past?
I taught him what I know of Bushido:
in face of fear to hold his courage fast, --------In face of fear seems a little clunky to me, could "In facing fear," work?
to choose where love and loyalty should go.
He was my student; now he's teaching me
That faithfulness can be our enemy.

I did also find myself wanting to know what went on in the past the protagonist felt unable to tell? Maybe this could be the subject of another sonnet?
I hope you don't mind too much my observations.
best regards
Mark

P.S., thanks for giving me cause to look up "Bushido" now I have another word in my arsenal .