I'm very intrigued with the spirit animals because of Life Is Strange. We learn that Max is a deer ans Samuel is a squirrel. I'm really convinced the (blue) butterfly is Chloe's spirit animal. I've done a little research. This is what I found:

What is the meaning of the butterfly? This animal totem is primarily associated with symbolism of change and transformation.

Powerful transformation, metamorphosis in your life, personality
Moving through different life cycles
Renewal, rebirth
Lightness of being, playfulness
Elevation from earthly matters, tuning into emotional or spiritual
The world of the soul, the psyche

A secondary meaning of the butterfly is about finding joy in life and lightness of being.

We know Chloe needs something to believe in and wants to be happy like she was before she lost her dad.

When the butterfly shows up in your life as a spirit animal or totem, it might indicate the need to look at a conflicting situation with more lightness and different perspective. This totem animal is symbolic of lightness of being and elevation from the heaviness of tensions.

This power animal invites those who have a connection with it to bring joy and bliss into their lives. Butterflies often have bright colors. By extension, they are associated with aliveness and brightness. The message of this totem animal is to lighten up and add more color to your life. Perhaps it’s time to express yourself more fully and show your colorful personality.

In many traditions around the world, the butterfly is a symbol of the soul or soul world. For example, in Chinese symbology, it can represent immortality. For the Japanese, a white butterfly symbolizes the soul the departed ones.

In Ancient Greece, butterflies represent the psyche or soul, and its attribute of immortality.

We have saved Chloe twice so far: Nathan and the train.

What if saving Chloe is the cause of the strange weather and space phenomenon? What if at the end we have to "let her go"?

What do you think? Do you think Chloe's spirit animal is the butterfly?