The reversed Nine of Swords is a card of worries and problems. It can indicate anxiety, fears and lack of self-confidence. In this situation it can also represent problems or concerns regarding Maria's health.
Death is a card that may seem ominous, but it shouldn't be taken literally. This major arcana can represent a transition phase, and in this case it could indicate that Mary may have concerns about her health that require a change.
Based on the information provided by the two cards, it would seem that the major concerns regarding Maria's health are related to possible problems or fears inherent in it. Death may also indicate that Maria is undergoing some kind of transition or change in relation to her health.