Your dream is rich with symbolism and emotions, and can be interpreted in various ways. Here are some insights into the key elements of your dream:

1. Shopping and Mass Street: This may represent a search for identity or personal fulfillment. Shopping can symbolize exploring options in your life, while the familiar setting of Mass Street could indicate a longing for comfort or nostalgia.
2. The Ballroom and Ivy: The shift to a more intimate setting with Ivy suggests a desire for connection and intimacy, but also reflects your inner conflict about this relationship. The black walls and white floor may symbolize a contrast between your hidden feelings (darkness) and a desire for clarity or purity (light).
3. Crying and Vulnerability: Crying in the dream indicates deep emotional release and vulnerability. It seems that there are unresolved feelings regarding your relationship with Ivy, alongside the fear of judgment from friends and family.
4. The Blizzard: The sudden change in weather from a nice fall day to a blizzard signifies overwhelming feelings or chaos. This may represent your fears about your decisions and the external pressures you feel from society or loved ones.
5. Driving and Fear: Feeling scared about driving in bad weather might reflect anxieties about taking control of your life or the uncertainty of your choices. The act of driving could symbolize navigating through life's challenges.
6. Encounter with Animals: The coydog and the giant cat may represent aspects of yourself or relationships. The playful coydog could symbolize loyalty and companionship, while the aggressive cat might represent hidden dangers or threats. The rabies transformation could signify fear of losing control or fear of repercussions from your choices.
7. The Grizzly Bear in Koala Skin: This bizarre creature may represent a facade or something that appears harmless but is actually dangerous. It could symbolize a situation or person in your life that seems friendly but has underlying threats.
8. Lucid Dreaming: Your awareness of dreaming and your attempts to scream suggest a conscious struggle with your fears and emotions. It signifies your desire to confront the chaos in your life rather than simply escape from it.

Overall, your dream reflects a complex interplay of emotions, fears, and desires. You may be grappling with your relationships, particularly with Ivy, and feeling the weight of external expectations. It could be beneficial to explore these feelings in your waking life, perhaps discussing them with someone you trust or reflecting on what changes you wish to make. Embracing your vulnerability while seeking clarity may help you navigate these complexities.