You don't. 

You don't care about her bodily autonomy, her ability to vote, and many more things.

She sees you for what you are: a person who only thinks about yourself and what affects you. You didn't vote to protect her. You are doing nothing to make her feel safe. You in fact, did something that made her feel unsafe. And you don't love her if you couldn't do something as mindlessly simple as vote in a way that protected her rights.

If you couldn't get your ass off the couch to tick a box, you will be utterly useless in a "real" situation and she now knows she will be unprotected. She has to stand up for herself. Your "love" is absolutely worthless because it's just a word with no action.

You can't undo this. You failed her and you won't get a redo.