This passage is from The Children's Bach by Helen Garner
The edifice trembles.
Athena stops eating, though she still buys food and prepares it. Her clothes hang off her, but her husband’s and her children’s are still clean and ready. She starts to walk by herself at night, she can hardly wait to be out of the house, they cannot seize her attention once the sun has set, her eyes will wander away to the open door, and Dexter knows he is not invited. She comes back after they have gone to sleep, and yet wakes before them. Her sexual life is solitary: she comes to visions of meadows full of flowers, white ones floating like a cloud above tangled green stalks, or to visions of great machines, or of galleries, endless, with high deep windows and velvet curtains and noble pieces of furniture, leather-trimmed, Florentine galleries along which her disembodied consciousness progresses to a stately pulse.
A) Is "she comes to visions of meadows full of flowers" the same as "she has visions of meadows full of flowers"? or she imagines she is on meadows full of flowers?
B) Does "along which her disembodied consciousness progresses to a stately pulse" mean "along Florentine galleries her spiritual consciousness progresses to a stately rhythm?" (I think here pulse refer to rhythm of a great music)