The Devil's card on the obverse indicates a mental block situation, a sort of blindness towards something that is before the eyes but one does not want to look at. In this case it suggests that you may be aware that your roommate is keeping something secret, but you have no intention of confronting her about it. It could be mental defenses to avoid conflict or simply an unconscious desire to ignore the situation.
The Six of Pentacles suggests that your worries about your roommate's secrets are becoming increasingly weighty and overwhelming. In fact, this card indicates a sense of emotional suffering that becomes physical, like when you feel overwhelmed by something you can't control. Therefore, it is possible that you are starting to feel the physical symptoms of this inner discomfort, even if you are not yet sure what caused them.
Finally, the Three of Pentacles makes you think about the importance of trust in your relationship with your roommate. In fact, this card indicates the need to find a balance between the need to protect oneself from negative emotions and the need to open up to others and trust. It could therefore mean that you are afraid to confront your roommate about her secrets because you fear that you will not receive an honest answer from her.
From the three cards analysed, a fairly clear overall picture emerges: you are aware of the presence of a secret on the part of your roommate, but you fear that facing her about it could make the situation worse or only bring you disappointment. Taking into account the overall message of the tarot reading, the answer to the question "Should I ask Laura about this?" è No: at this moment it would be better to let it go and wait for things to resolve themselves.