Personally, I don't actually think tarot figures appear in the poem, or any of her poems. The figures are archetypal father-husband-god, daughter-wife-goddess stuff (Plath was a big Jung fan), and insofar as the tarot taps into those archetypes that's why there's an overlap in the symbolism.
I don't have her analysis in front of me, but I definitely know that she gave the role of the empress to Plath. I don't think the connection to tarot is that clear, either. The same person also saw electroshock therapy in the Bee Meeting, which I didn't see AT ALL.
Sperran