Hmm. Twelve is a mystical number, as in 12 disciples ... You join the others at the table to complete this number. The lady in a wheelchair tries to stop you - is she warning you that she followed the same path and that it may bring you to harm? You may be "crippled" if you go on?
They give you a crystal ball - to see the future.
The figure 8 is also mystical - could it represent the worlds of matter and anti-matter? The worlds of material and spirit? I read an interesting theory that the world of matter was created by an anomaly in the mind of God. Two parallel dimensions - two worlds of existence - separate but joined? (Check out Chico Xavier, in the Reincarnation section.)
Blue (healing?), then pink (non-sexual love? - we are supposed to be here to learn detached, universal love) then purple (indigo? - highest spirituality).
When the ball shows purple, they all gasp. You have achieved something amazing.
Do you want to go on, or might it prove too much for you at this stage?

The choice seems to be yours
Best wishes to you as you follow your path.
Tish