The Six of Cups obverse represents nostalgia and affection, but also past experiences that can influence the present. In the context of your question, this card suggests that your friend Martina can offer you a fresh perspective on your career. Perhaps you've learned valuable lessons from your past experiences, and Martina can help you see how to apply those lessons to your present. Furthermore, the Six of Cups also represents generosity and kindness, so it could also mean that Martina is ready to help you in a generous way.
The reversed Six of Wands indicates that you may feel stuck or insecure about your career. This can be caused by fears or worries you are dealing with in the present. The reversed Six of Wands also suggests that your friend Martina may have some important information to share with you that can help you get through this difficult time.
The reversed Seven of Cups indicates that you may not have the information or resources you need to advance your career and achieve your goals. However, the reversed Seven of Cups also suggests that Martina may be able to provide you with helpful advice on how to proceed, take advantage of the opportunities available, and achieve your goals.
In conclusion, considering the three cards, it seems more probable that Martina can give you useful advice on how to proceed in your career. She may offer you a fresh perspective on how to best deal with difficult situations and show you new opportunities to exploit. This is therefore the most probable answer to the question posed.