Thank you for sharing your dream. Dreams involving shadowy figures, transformations, and mystical symbols can be quite profound and often reflect deeper aspects of your psyche.
The woman made of shadows may symbolize parts of yourself that you are not fully aware of or have yet to confront. Shadows in dreams often represent fears, insecurities, or aspects of your personality that you may find unappealing or that you hide from others. Her initial appearance as spider-like could signify feeling trapped in your own fears or situations that seem overwhelming, but your ability to engage with her in a casual and nice manner suggests a willingness to confront these darker aspects of yourself.
The transformation of her appearance from something fearsome to a more attractive and friendly form indicates personal growth or acceptance. It seems you are learning to embrace and integrate these shadowy aspects of yourself. The glyphs and symbols could represent knowledge or insights that are emerging as you explore your identity more deeply. The presence of the name "Tranquillus" could signify a desire for peace and balance, highlighting the importance of tranquility in your personal journey.
Her comment about humans having limited time to see these things suggests that you may need to take action and explore these insights before they fade away. The suggestion to look at your table for a message indicates that there may be more to discover in your waking life. It might be beneficial to create a space where you can reflect on your experiences and thoughts, perhaps through journaling or meditative practices.
In summary, your dream seems to encourage you to confront and embrace your shadow self, to seek knowledge and insight, and to be open to the transformations that come with self-discovery. If you feel inclined, consider keeping a dream journal or engaging in creative expression to continue this exploration.