There's no more respectable way of saying you appreciate a person; in person. We frequently forget that texting isn't life we need to reclaim the conversation just how Sherry Turkle put it in her book "Reclaiming Conversation". We deprecate the value of what a good conversation could be. Simply take your time and get to know her in person. Go on a free date and just walk and talk. Do things that don't involve your phone.
People in relationships tend to quickly send that "happy for you emoji" then show how much we are proud of someone's achievements In person.
Let's pick a day whatever day. When your better half gives you good news surprise them with a gift. You don't have to spend money if you are creative. Bring it back to art class use what you already have and make her smile with just using your mind.
It will also help if you know your spouse well.(lol)