batiks pretty much always bleed some---they are hand dyed and have excess dye in them that needs to be washed out-
when the quilt is all finished you should wash it in a washer with Synthropol-which is an additive that will keep the fugitive dyes from getting on other fabrics- will keep the dye in the water- it is important to follow the instructions- and it is important to remove it immediately when it is done---don't let parts touch other parts while wet.
then rinse it again with color catchers.
and
when it's all done- only you will know if any fabrics caused marks on other fabrics- anyone else looking at it will only think that is how the fabrics were from the beginning.
for future reference---always prewash batiks---if you buy pre-cuts put them into a mesh laundry bag to keep them from getting tangled- or fraying
only you will know it's not exactly what you planned- but hopefully most of it will come out-finish the quilt===then deal with it- if you try to deal with it before it's put together you will also have frayed edges and other problems to deal with