The first card is the Six of Cups. This card represents a block or something that is limiting the relationship between your sister Nadia and her family members. It could be a problem, a pain, an unresolved conflict or a misunderstanding that is preventing her from moving forward in the relationship.
The second card is the Five of Cups. This card represents the solution to the problem you identified with the first card. The possibility of resolving the conflict and finding harmony between the people involved is highly probable. Also, this card suggests that even if there are some difficulties, there is still room to exchange love and understanding.
From the two cards chosen, it appears that your sister Nadia has a good chance of solving problems in her family relationships. However, it will be up to you to make the right choice and act in order to overcome the blocks. The final decision is therefore: Sister Nadia, there is a future for you in terms of family relationships.