The first card you picked is the Eight of Pentacles. This tarot represents an ideal of health based on care and self-protection. It is a sign that you need to take care of yourself methodically and with discipline to maintain your health. Additionally, she suggests not relying on others to safeguard your health, but rather focus on yourself. So in this case, if you want to achieve your desired ideal of health, you should be proactive in looking after your well-being and making sure that you yourself contribute to maintaining your health.
The second card you chose is The Hierophant. This tarot represents an acceptance of reality and an attitude of contentment. In this case, the Pope reminds you to look at things from the point of view of reality and to accept the current situation without complaining or breaking down. So when it comes to your health, you should be aware of the current situation and accept it instead of trying to change it drastically and quickly. Additionally, this card can also mean that it's important to ask for help from others when you need it, and not be too proud or stubborn in wanting to do it all yourself.
From the detailed interpretation of the two tarot cards regarding the question on health considering your sister Giovanna we can conclude that the most probable answer is Settle. This means that you need to be aware of your current health situation and accept it instead of trying to drastically change it without realizing it; at the same time you should remember to take care of yourself methodically and disciplined to maintain your health and be ready to accept support from others when you need it.