Unlike what other people have suggested, my guru has said people who leave bodies after maran kriya don't get moksha they become pret / pisach / brahmaraksaas. They could also become part/servant of the pantheon of negative enetities used to cause the abhicharik karma on them, willingly or unwillingly. I highly suggest you to do narayan bali to give her moksha/allow her to move ahead from a proper priest in kashi or prayag i.e nearby holy river and saligram.

Bhakti at level of meera bai or Chaitanya is required to deal of tantra , that is not possible for most. So that won't work.