I reckon the more likely story, given what I know of a) psychology b) domestic violence c) the legal system - the closest to the truth is what was said in the 000 call and to the coppers on the day.
The retracting of statements tends to happen not because you’ve realised you were incorrect about what you said happened at the time, but because by then he’s apologised and doing the lovey-dovey routine, and it’s started to sink in what you stand to lose if the relationship ends, he goes to gaol, whatever.
Any cops, magistrates etc regularly dealing with DV matters would be all over the cycle of statement, retraction, turning up hand in hand to court...and I would suggest - not easily fooled by it.
There are also a couple of indicators in the 000 call and the recorded statement on the cop’s bodycam that this isn’t the first time this particular relationship has erupted into aggression or violence (notwithstanding what’s already known i.e. punching doors). The statements about not wanting to be alone with him, and him being scary “when he’s like this” are red flags. Note she didn’t say anything along the lines of “I’ve never seen him like this and it’s scaring me”, it was “when he’s like this”. Really interesting choice of words there.