R.L.
I'd recommend that you give her back control of her learning process. As adults, we have mostly forgotten what it feels like to be worried or anxious about using the toilet, and we really can't exert control over our children in this situation. We can help them to feel comfortable and help them want to reach this developmental milestone. I'd back off a little, don't try to force anything, let her wear pull-ups or underwear, whichever SHE prefers, and clean up any accidents with patience and reassurance that soon she will learn.
Try to let go of your own worry about the fall and expect that there will be sleep/behavior/and perhaps toilet issues when you return to work, but you will STILL be able to help her with the transition, and she will be fine.