Your dream is rich with symbolism and emotional depth, reflecting your current feelings and experiences in your waking life. Here are some interpretations of various elements in your dream:

1. Best Friend and Her Family: The presence of a best friend you do not know in real life suggests a desire for connection, support, and understanding. Her family represents a safe space where you can explore your feelings away from the conflict in your marriage.
2. Cheating and Guilt: Engaging in a relationship with her brother may symbolize your longing for emotional support and understanding, especially amid the struggles with your husband. The guilt you feel indicates an inner conflict about your choices and the desire to resolve issues rather than escape them.
3. Brother as a 'Fuck Up': This may reflect your perception of your own situation. You might feel judged by others or even by yourself for the choices you’ve made or the circumstances you find yourself in. His eventual acceptance by the family could symbolize hope for redemption and the possibility of seeing the good in difficult situations.
4. Military Departure: The brother leaving for the military could represent feelings of abandonment or fear of losing support when you need it most. It may also suggest a need for structure or a desire to escape your current reality.
5. Snowy Road and Potholes: The recurring snowy road signifies a difficult journey, perhaps reflecting your emotional state. The potholes represent recurring issues in your life that you may be ignoring or forgetting, leading to repeated difficulties. It suggests a need to recognize and address these challenges rather than avoiding them.
6. Axolotl: This creature is often associated with transformation and adaptability. Your care for the axolotl, especially when it gets stuck, may symbolize your own struggles with feeling trapped in your situation. It could also reflect a need to nurture yourself while you navigate these difficulties.

Overall, this dream seems to illustrate your desire for support, your feelings of guilt and shame, and the challenges you face in your current relationship. It might be beneficial to reflect on your waking life, consider reaching out for support, and think about the changes you may want to make to improve your situation.

Your dream is rich with symbolism and emotional undertones. Here are some interpretations and insights based on the various elements you described:

1. Conflict and Cheating: The fighting with your husband and the emotional turmoil suggest that you might be feeling trapped or overwhelmed in your current relationship. Cheating in dreams often symbolizes a desire for freedom or a need to explore other options in your life. It may reflect feelings of guilt or shame about wanting to escape your situation, which aligns with the emotional abuse you mentioned.
2. The Best Friend and Her Brother: This new friendship and the brother figure could represent a part of yourself that is seeking support and understanding. Your best friend might symbolize a safe space where you can express your feelings without judgment, while her brother could represent someone who offers comfort and a different perspective, despite his family's initial perceptions. The fact that he is seen as a "fuck up" may mirror how you perceive yourself or how you feel others perceive you during this difficult time.
3. The Snowy Road and Potholes: The repetitive journey down the snowy road with potholes may signify the challenges and recurring issues you face in your life. The snow can symbolize emotional coldness or difficulties, while the potholes represent obstacles that you keep encountering. Your awareness of these potholes suggests a desire for change, yet you feel stuck in a cycle of repeating mistakes or unresolved issues.
4. The Axolotl: This creature can symbolize transformation and adaptability, as axolotls are known for their regenerative abilities. Taking care of it in a terrarium may represent your desire to nurture something fragile in your life—perhaps your own emotional well-being. Its struggles to navigate the terrarium could symbolize your own feelings of being stuck or struggling to find your place in a difficult situation.
5. Overall Feelings: The sadness and stress you experienced in the dream reflect your internal conflict and emotional state. It suggests a deep yearning for support, understanding, and an escape from your current reality.

Advice:

• Reflect on Your Feelings: Consider what aspects of your life might be causing you stress and whether there are healthier ways to cope with your emotions.
• Seek Support: Just as you found solace in your dream friend, it may be helpful to talk to trusted friends or a professional about your feelings and experiences.
• Explore Changes: Think about what changes you can make in your life to break free from the cycle of conflict and emotional pain. This could involve setting boundaries, seeking counseling, or finding new paths toward healing.

Dreams often hold a mirror to our subconscious. By exploring these themes, you can gain insights into your waking life and work towards a more fulfilling emotional state.