My theory is that she was relying on these phone calls as her alibi.
More or less.
SHe "panic called" (IMO). She made 3 calls in succession and was on the phone from 12.27pm - 12.46pm. At 12.49pm she bought the Bulleit bourbon (CC receipt).
So i think she was at home, freaking out, completely adrenalised not knowing what had happened and jumped in her car to drive to the crime scene to see what had happened. She did not expect the police to be there.
At 12.30pm KM and SG spoke on the phone, with SG telling KM it was done and KM replying "I know." So someone told KM Dan had been shot before 12.30pm.
Note Rashbaum very aggressively pushed Office Brannon (who was at the crime scene) to give an approximate time when he saw WA's car. Not of any relevance unless you factor in KM's comment at 12.30pm "I know." Brannon said he could not really remember, after being harangued by Rashbaum he reluctantly agreed it was close to 1pm.
This was impossible. At 12.47pm WA was at ABC, then went to get petrol, then lunch. Rashbaum then got Brannon to admit it was after 12.30pm. Brannon had already stated multiple times he did not know what time he saw WA, but again acquiesced under pressure and admitted it was after 12.30pm. As I said when WA went to the crime scene is completely irrelevant until you consider KM's comment. The inference being, WA texted CA, he texted KM. Rashbaum was aware of this. Getting Brannon to confirm WA was not there until after 12.30pm gives CA (and WA) an out. Except she probably was there before 12.30pm.
She called Joe Davis at 12.27pm. So I think she got there before that call, saw the police and freaked out, calling Joe, then Laura, then Jeff. Also at some point texted CA to said Dan had been shot. Now she didn't get to ABC until 12.46pm and it's only a 3 minute drive from Trescott, so I think she went home, got the party invite and raced to ABC liquor store that was out of her way. But she could say that was why she was seen on Trescott,she was on her way to this particular store. I don't think she had any intention of going to ABC that morning or that store.
She made a big deal of engaging with the employee at ABC, discussing her fake blue eyes and showing him the party invite, establishing an alibi like something from a B grade murder mystery movie.
I think her intention was to go to Dan's house, confirm he was shot, go home, change for lunch and go to Mozaik. She did not intend to get bourbon or petrol. She did that as police saw her car and in a panic she was racing around alibing herself. She intended to argue she never left the house, until she went to drive directly to Mozaik.
She got to lunch late. If she was running late she could have skipped getting bourbon or got it at a closer store or bought it after lunch. She had enough petrol to get to Moziaic if she gone the direct route, again she could have done this after lunch.
This is behaviour that can easily dismissed as a person doing odd things. As someone pointed out their Mil randomly keeps family members license plates and as I pointed out odd behaviour is not necessarily an issue, until you become a suspect in a murder. Then you need reasonable, rational and plausible explanations for your behaviour and actions.
Why did WA not go directly to lunch?
Why did WA not buy bourbon after lunch?
Why did WA not go to a closer ABC store?
Why did WA not buy petrol after lunch?
Why did WA not shower and change for lunch?
Why did WA lie 5 times in trials and interviews about her trip?
She will have responses to all of those, but they will be ludicrous. She will have to try and explain her bizarre circuitous route to lunch and the jury will (like us) see straight through it. A court bases its judgements on the behaviour of what a reasonable and rational person. This crazy trip she did does not align with what a reasonable and rational person would do. End of. If you are late you do not do unnecessary things that will make you even later.
I also think if the State can get a fix on WA's timeline around Trescott that will help i.e what time did she turn on to Trescott? If it's after 12.30pm (which I doubt) that helps the defence, if it's before 12.27pm then she has a problem.