Dreams involving settings like an old abandoned fortress or castle often symbolize feelings of nostalgia, past experiences, or unresolved feelings. The fortress may represent your mind or heart—perhaps there are old emotions or memories that have not been fully explored or addressed.

Seeing your crush in a blue dress can indicate feelings of admiration or desire, but her older appearance might reflect your perception of her maturity or perhaps your worries about the future. The act of her crying suggests vulnerability, which may relate to your feelings of empathy towards her or your desire to be a source of support in her life.

Her mention of her mother could symbolize deeper familial or emotional issues that she is grappling with. This may also reflect your subconscious desire to understand her better and to be there for her during tough times.

The comforting gesture and the kiss can signify a longing for closeness and intimacy, indicating that you wish to express your feelings more openly. This dream may be prompting you to consider how you can connect with her on a deeper level, while also reminding you to reflect on any emotional baggage that could be influencing your feelings.

Overall, this dream highlights themes of emotional connection, support, and the exploration of your feelings towards your crush. It may be beneficial to think about how you can be a positive influence in her life, while also ensuring you take care of your own emotional well-being.