When the Four of Wands appears obverse in a tarot reading, it indicates that a person is well grounded in their current situation. He may be able to exploit her to his advantage or he may be blocked by her. In the case of the question at hand, this card suggests that Roberta is well aware of the long distance relationship situation and she knows how to manage it and how to benefit from it. It is possible that there is a strong emotional connection between the two which contributes to the stability of the relationship.
A reversed Page of Wands may indicate that a person is too wrapped up in their personal worries or problems to prioritize relationships. It is possible that Roberta is so self-absorbed that she is unwilling to work on the long-distance relationship and put her personal problems on the back burner. Also, the reverse orientation of the card may mean that Roberta is not ready to commit to the relationship.
Based on the reading of the cards, it appears that Roberta is determined to keep the relationship long distance and is willing to do what it takes to make it work. However, personal problems could become a stumbling block if not addressed properly. Therefore, the answer to the question "Do you think the relationship between Roberta and you will work out?" è: Yes, with a few small conditions.