The first card is The Emperor reversed, indicating a lack of control and authority. This suggests that there is a great chance that something will go wrong in the work. Magician Lucas may feel that he doesn't have the control or authority to make sure all goes well, so he may be concerned about trusting Valentina.
Secondly we have the reversed Ace of Cups, which indicates a lack of recognition of the situation. This suggests that there is a lack of faith from Wizard Lucas in Valentina's ability to get the job done. He may also be concerned that he won't be able to offer the necessary information or advice because she doesn't recognize the situation correctly.
Finally we have Seven of Wands, which indicates a final decision to be made after considering all aspects of the situation. Magician Lucas may be able to overcome his concern and find a way to proceed with work with Valentina, but he will have to make an educated decision after considering all aspects of the situation.
In conclusion, based on the detailed interpretation of the tarot cards, it seems likely that Magician Lucas may have some concerns about relying on Valentina for this work. However, with the right final decision and careful consideration of the situation, it is possible that the concerns can be overcome and the job can proceed successfully. The answer to the question is therefore "No", as the cards suggest that there is a possibility to overcome worries with the right final decision.