In my opinion, I would back off on the training for a bit. She doesn't need any added stress, things to work on or reasons to disappoint anyone if she makes mistakes (I know you wouldn't be mad at her, but still - she still knows that a potty accident isn't what you are looking for).
She is under so much stress that parents can't possibly imagine. She is not of age, maturity or mental rationale to logically sit there and plan out how she can manipulate her parents. It just doesn't work that way with a 2.5 yr old. She has however, probably enjoyed the constant extra attention, touching and closeness that diaper or clothes changing requires.... and right now she really needs that from both parents and is thriving on it. May sound weird, but having to be changed gives her all of that and it makes her feel close and cared for. I would hold her VERY close, hug her, carry her (maybe get a good sling to carry her on yor hip or back), cuddle, lots of emotional and physical contact and love gestures. I think once things settle after a while and in her own time - and once she gets all the attention, contact and needs she has in other ways, she will again make progress with potty training. I wouldn't push it. She just needs love right now, nothing else.