When it comes to the Tree of Life, the Divine Mother is very elusive, because she is the Tree itself.

The Hebrew letter Aleph is the breath of the Ain Soph that emerges to create. The first sound of that breath, the first creation, is the first letter of the Bible, Beth, the "house," within which the breath gives life. Beth is the Divine Mother. The Ain Soph creates the Tree of Life, the sephiroth. All of that is Beth, the house or womb in which all creation is elaborated.

She has many aspects and ways of expression, and thus cannot be limited to one sephirah.

Cats generally relate to alchemical Mercury.