Well the point was that Alex Salmond sought a meeting with Nicola Sturgeon before these allegations broke, and one has to ask oneself why?
At one point (and maybe this is still the case), Salmond was complaining about Sturgeon avoiding him and lying about where she was, as he was trying to secure a meeting with her. It's all very dreary. There are texts between the two of them with Salmond saying, 'Will you meet me at such-and-such a place?' or 'Will you be at your office in Edinburgh later?', and blah and blah. She gives it blah and blah and it becomes obvious after a couple of texts that she's avoiding him and saying she'll be there and then she isn't. This would normally be because her ministerial office put her in an embarrassing position given that Salmond was a criminal suspect, but Salmond seemed to be implying (and is now alleging) that Sturgeon was avoiding him because she was somehow behind the pressure to prosecute him.
This in turn implies that Salmond was approaching Sturgeon not because he wanted her to influence the criminal justice system in his favour, but because he wanted her to stop influencing the criminal justice system at all. If he was simply approaching her in an effort to stop the prosecution, I doubt he would be making anything of this as he would then be admitting to the same mischief that he accuses Sturgeon of, but in any event, he was contacting her to influence her.
Conversely, if Sturgeon was acting innocently in avoiding Salmond on account of ministerial ethics, then surely she would have precluded anything other than the most perfunctory meeting or encounter with him by explaining this or having this communicated to Salmond by Scottish government lawyers. Yet she did not do so.
I'm afraid on that logical basis it does look very much like both Salmond and the First Minister were up to no good.
In Salmond's case, he should have pursued the matter through the official channels (and ironically, had he done so, it may have had the effect of stopping the case in its tracks at that early stage due to abuse of process, and could have also brought down Sturgeon). I assume he didn't follow the proper avenues because he is a Scottish politician who is used to working behind closed doors in a devolved system that has lacked the necessary checks and balances, and as a former First Minister himself, he has just got used to operating like this.
In Sturgeon's case, she should not have been interfering in the criminal justice system except within the ambit of her role as a minister in the Scottish government. This was clearly not within her ministerial role. If she did interfere, she must resign - immediately.