Camryn, let's delve into the rich layers of your dream. The image of looking through glass doors can symbolize a barrier or a sense of separation. Glass, transparent yet solid, suggests you might feel close to a goal or a realization, yet there's something still keeping you from fully accessing it. This barrier might not be physical but emotional or psychological.
The house represents your own mind or self. The fact that you were inside the house but looking out indicates introspection and the desire to understand an external situation better. Houses in dreams often relate to your sense of security and personal space, and looking through glass could mean you're currently in a phase of self-reflection, trying to gain clarity about an aspect of your life.
Seeing the small inground pool through the glass doors, especially one resembling your grandma's old backyard pool, ties the dream to personal memories and emotions. Pools are often symbolic of deep emotions and the unconscious mind. Given that this pool is a smaller version of your grandma's, it could signify that you are contemplating past emotions or situations that seemed significant during your childhood but now appear more manageable or less daunting in your adult life.
Your grandma's backyard might hold particular sentimental value, representing warmth, family connections, and possibly a simpler time in your life. The smaller pool could be a metaphor for how those significant childhood memories have been 'downsized' or compartmentalized as you've grown older.