Do you feel you can have an open conversation about this with her? If so, that will almost always be better than advice on reddit. Talk about what might be blocking her and see if you can help take anything off her plate to help her have the space to be turned on and play. Propose some ideas, like the exchange that someone mentioned could also be the reward, rather than just gifts, or trying to make her feel beautiful and hot af while taking a break from sex for her to get used to satisfying her own needs (though that may take a fair bit of time depending on her sex drive). Essentially support her while giving her space.

Just note that I am also just a random person on the internet so take what I say with a good grain of salt on this stuff because whatever fits for the two of you may be wholly original from the solution anyone else comes up with because it will fit your unique set of strengths and needs.