The first card we have is the reversed Three of Wands, which tells us about the opportunities related to your grandmother's health. This card indicates that your chances of improving your health are limited, and that it can be quite difficult for you to change your habits. However, if she puts the will and takes advantage of the opportunities available to her, she can still get some improvement in her health.

The second card is The Moon reversed, telling us about your grandmother's health challenges. This card shows that there may be some challenges to achieve improvement in her health. It could be about emotional or mental issues, such as anxiety or depression, or it could be about time management or nutrition. In any case, your grandmother will have to face these challenges in order to achieve results.

The last card is the Ace of Swords, which tells us about your grandmother's health result. This card indicates that if your grandmother is willing to face challenges and seize opportunities, she will be able to achieve significant improvements in her health. Your health may improve and you will be able to feel better and more energetic.

Bottom line, the cards suggest that if your grandmother is willing to take on challenges and take advantage of the opportunities available to her, she can achieve a dramatic improvement in her health. So, according to the tarot, the most likely answer to the question "In your opinion, should my grandmother Rosa buy a new TV or keep the old one?" It is Old TV as the main focus should be placed on your grandmother's health and the tarot suggests that this would be the healthiest approach to arrive at the desired result.