JavaScript you can paste in Firefox Scratchpad to Like everyone until you run out of likes. Obviously, you have to use this with the web-browser version of Tinder.

likeHerOnTinder.js

function outOfLikes() {
  var h3 = document.getElementsByTagName("h3");
  for( var i = 0; i < h3.length; i++ ) {
    if( h3[i].innerText == "You're Out of Likes!" ) {
      return true;
    }
  }
}

function likeHer() {
  var like = document.querySelector('[aria-label="Like"]');
  like.click();
  if( !outOfLikes() ) {
    setTimeout(likeHer,500);
  } 
}

likeHer();