Is this a "careful what you wish for" ?
It really might be.
While to date this has been little more than the regular "journalists feed off social media, journalists write vague story, story sends social media into frenzy" type cycle, analyse what little facts there are.
She is a wealth fund manager, not a buyer in her own right. Wealth fund managers are paid to grow funds through various forms of investment. They will only invest in a PL club if they see a way of returning growth.
If anything were to happen in this case it's more likely a conservative acquisition of a share of the business, rather than a full takeover, and not some sugar daddy looking to bank roll a load of signings to chase success on the playing field.
However, if she is acting directly on behalf of a rich friend, rather than the fund she manages, a very different outcome could be possible.
Very hard to imagine anyone being worse than Ashley though, sure it's possible but not likely. It's like when Pardew left, "who next?" was secondary, it felt good as it signalised change.