Regardless of what appears to be popular opinion, cal mag is not the do all, end all miracle solution some think it is. Reasearch and knowledge are.cal or mag def flush out your soil make sure ph is correct and dont use any nutes untill back to normal
Sorry to disagree here but how does that coincide with your signature of keeping it simple? Transplanting 2 times will stress her and could spell death to her. At the most perhaps a good flushing could be of value. But moving her from medium too medium and then back again? Not a good idea my friend. Not trying to troll your post and mean no offense.your soil was probably to hot...burned them leaves up a little. pull and plant in some coco/per lite till she recovers, then transplant her back add a buffer soil mix between roots and your mix.
it is simple. And if you cant take such actions from fear of stress and death...then you my concerned friend need to up your skill level. To each his own, flushing would be the last thing i do at this point.