Yes and no on the pouch. If you were tinny and some big unknown to you beast stuck you in a pouch and carried you around and you couldn't get out how would you feel? These aren't marsupials where this would be natural for them. If they did this everyday for months you would stop fighting and eventually assume by repetition that they wont hurt you when they do this but would you like them? Would you willing come to them when they open the cage or try to hide knowing the pouch could be next? So tame yes but bonding no.
You will just need to take it very slow. You give her her food and try to get her to take treats from your hand. Sit near her or in her cage if it's big enough(It should be big enough if there is a big enough opening) so that she can get used to your presence and you not being a threat.
Was she tame before coming to you, that will make a big difference. But even tame exotics often do not rehome well. You just need to be patient and hope.