They should and heres why.

So, basically it said she got the flu and couldn't go to work any longer.
I don't think theres a split second where someone goes from resistance to exhaustion, and some argue that it couldn't be exhaustion because in exhaustion, your body can't cope with the stressor.
Well, Grivas and Carter beg to differ.

See, there is some resistance to the stressor despite being in exhaustion, so it is entirely possible that she was working for a short while whilst in exhaustion.

That bit from Grivas and Carter can be taken two ways, she did take some time away from the stressor, presumably spent time with her baby so in theory if she was in resistance she shouldn't have broken down after a few days.
But your question was if VCAA would accept it? My honest answer, no, they're a bunch of twats.