Let's just hope they keep more than one black female at a time. Otherwise Sasha is a goner.
WD scripting is fairly predictable, so I would guess Sasha is a goner. On this show, supporting characters either end up being paperweights with a line or two just to show they are still alive (Beth), or have the kind of personality designed to eventually get them into trouble (Dale). Sasha seems to be the latter, and I would bet she will get hers at the hands of her plotting companions, or the angry cyclops, or a combination of both.
Although it does seem the writers have no clue about what to do with Michonne. I'd feel better about the character's future if they could give her a personality.
I think they are waiting to give her some "big moment" to have another showdown with the Gov/prove herself to Rick's group when it matters most.