Bethany's nickname is Bea - (once used by her mother as a term of endearment for reason's unknown)

In Latin the meaning of the name Bea (short for Beatrice) is bringer of joy, she who makes happy, she who brings happiness, which is from beātus (happy, blessed). In the Divine Comedy, Beatrice was Dante's guide through Paradise, to Empyrean. Beatrice is more than a simple muse. She is an idealized love, the kind of love that transcends physicality.

Empyrean (similar to the Sindria, Calageata), in ancient cosmologies was occupied by the element of fire (or aether (Light) in Aristotle's natural philosophy). It is the dwelling-place of the blessed, celestial beings so divine they are made of pure light, and are the source of light and creation. This paradise is depicted as a series of concentric spheres surrounding the Earth, which includes the Empyrean.

Calageata is a haven for souls. The entrance is often referred to as Swan-Gate, which represents an ethereal swan-type bird (Benu) in the Otherworld creation story. A sacred bird that could cross time and space on a cosmic sea.

http://www.traceyannemccartney.com/awake-in-purple-dreams.php