Why she deserves grace
Repeat after me: “I am sometimes difficult. I am sometimes rude, sometimes short-tempered, sometimes impatient, and sometimes the words coming out of my mouth are absolutely unintelligible to anyone not living inside my head.”
If that’s not all true of you, and/or there are other things which should go in there (anger, perfectionism, pettiness, you get the idea), modify as necessary. Then think about putting the statement some place where you (and only you) will see it regularly. This is not about making you feel bad about yourself, but rather about helping you to see what your bride has to deal with on occasion. The next time she is short with you, maybe it’s because you have been too many of those things recently. Alternatively, maybe it’s because she is some (or all) of those things on occasion.
With all this in mind, do you think maybe your bride deserves more grace than she gets from you? Maybe you need to go give her a kiss and thank her for putting up with you!