To me Alice wasted too much time to coercive him back: she probably thought a image-conscious person like Ioan will give in at some point if you threaten and embarrass him enough and if you make co-parenting hell (and honeslty I thought too). and she still continues it (albeit now by proxy) to at least get a better settlement.
I understood her IG posts in february 21 where she said she is "still fighting against it" etc. etc. but the moment he filed for divorce it should have been over. But we saw the various text messages after this of her dismissively suggesting him to come back (into the garage), or her mailing his mom in August that she should make him change his mind for the kids, or her various comments on twitter (as late as the day of her leaving from there) and interviews (the Sara Vine podcast, the OZ radio show, her DM column) that she would possibly take him back. Of course none of this would have been out of love at some stage, but purely for convenience. But it prolonged the pain. And instead of focusing on the best possible compromise for her she tried to get the whole cake but will probably end up with the crumbs as her behavior made the divorce expensive, her behavior ensured that Ioan would never be accommodating towards her and her behavior can be used in so many ways against her.
A smart person would have silently done the negotiations, California has a 6 months waiting time for divorces anyway so there is plenty of time to change your mind on many things, ensure perfect co-parenting, show your most impressive game, make yourself amazing. Either it brings him back or he will be much more willing to settle higher. Alice started ranting about him the day he left, and in a manic way the day he filed. And according to the court documents she had her threats in private in way before it and harrased him over phone at the time. By the time they entered any negotiations he was already done with her, this was her big mistake.
But guess that's what happens when you listen to people on twitter who advise you to "show teeth".