In Texas we call this Joint Property, so I would argue she did not ‘break into’ her apartment.
She broke in to his apartment not their apartment. She apparently had never even stayed there.
And you have proof positive that he bought the subject firearms during the marriage and that he did not own any of them prior to the marriage?
Or was your statement supposition on your part.
If she was not the lease, was not living there, she had no right to enter the apartment. It was correct to send her to jail because it was in no way her place and had no right to be there. . .married or not.