A bit of creative salesmanship is hardly the same as a four hour interview with police.
Even the pathological liars I have had the displeasure of knowing would have been screaming for a lawyer if they knew they were up to thier neck in it.
Just my opinion, based on not much, but women are usually more realistic about these things. As well, a woman (just imo again) would be more inclined to feelings of regret and conscience
It's my suspicion that she didn't lawyer up and co-operated with investigators because she wanted it out and was prepared to suffer the consequences
People might laugh and they may be well justified, but her focus, initially, we're told, was upon the finer things in life - the beautiful, the aesthetically pleasing and rewarding. Hence her trying to make a career and lifestyle very probably, based in art
As someone has said, there's not a lot of money teaching art. Lots of hard work, trying to foster in children an appreciation of the finer, more ethereal things in life. So, not a woman focused on money or ostentation, prestige, etc.
That being the case, she may have been drawn into matters which spiralled out of her control. She's not a terribly attractive woman, whereas GBC could be described as a good-looking man. Maybe she hadn't ever received much attention from men? If not, understandable that she could have crossed boundaries when wooed by a spin-artist
If it's true she's reasonably comfortable financially (?) (several properties?) it might not have crossed her mind until too late that her bank balance was her primary attractiveness from GBC's perspective
Could be completely off-track with this, but it's my current suspicion that she decided to make a clean breast of it with investigators, wanted to do the right thing - belatedly
If any of this is remotely correct, I hope people are keeping a good eye on her and ensuring she doesn't entertain thoughts of suicide