...More practical interpretations may be, if you would indulge my braindump...
-Psychotherapy
-Alternative therapies (as opposed to the conventional SPAM SPAM SPAM of Le Pape or L'Hermite).
-Intuition
-Study of...(whereupon she regards), but perhaps not in an intellectual sense.
-Magic
-A wo(man) of inscrutable personality
-A wo(man) guarded
-Caution/Watchfulness (as conflated with Diana the huntress)
-Pregnancy or fertility (the egg under the layers [fabric] of the uterine wall)
The best known myth about Selene (goddess of the Full Moon) tells how she fell in love with the beautiful youth Endymion, a shepherd. As a shepherd, he was likely an astronomer.
I see Endymion in Le Mat,
...
...thus Le Mat looks skyward, he has a shepherd's staff, and a little dog. Selene discovered him asleep in a cave and fell in love with his beauty. Selene made him eternally asleep (I think via Zeus' superpowers) yet had him sleep with his eyes open. This is such an apt metaphor for the incarnation of the soul into a body (sleep), urging us to look skyward with awakened eyes (eyes open). Oh! The layers of meaning here!
But, I digress.
To switch gears, or more accurately switch layers on this one cake, I see La Papesse as
Isis, to put an Egyptian-esque aestheteic upon her. Moreover; I have always seen Le Mat as Osiris.
So, this would aptly match Osiris with Isis, and thus match Le Mat with La Papesse as a type of perfect couple. I am speculating here, only. But, what an interesting combination-platter in a reading would be Le Mat + La Papesse.
Think of how this combination could fit with the context of a particular question.
To say more on that, Isis reassembled Osiris, that's the Federal Express version. In this mythology, Isis was the Divine consort of Osiris. Set (I think this is Le Diable), plotted against Osiris. Isis was cautious as a rule (La Papesse ~ in a reading: Caution, watchfulness). After Set dismembered Osiris (perhaps XIII?), Isis was distraught, cut off her hair and put on mourning clothes (La Papesse). She then engaged in a clever and intricate plot to revive Osiris (La Papesse ~ in a reading: cleverness, a more gestational plan, intricate, subtle). Ultimately, she revives Osiris.
And, on an esoteric level, (mind racing now) there is a sense here to me that La Papesse is the first impulse or first glimpse of the soul, that there is something behind the mundane affairs of Le Bateleur. The human senses inner divinity, but it is veiled still, but reassembly is required.
Well, I need to stop here before I tongue-twist on my own manic babbling.
It has long been said that the myths are the same story across cultures; the same narrative, different costumes; somewhat like when Hollywood gets inspired by an idea, and then repeats it
ad nauseum. The Tarot no doubt reflects these perennial themes.