Who was watching the store ? How could she steal that much money, over such a long period of time, without the boss seeing this happen. It must have been a very protitable business.

Bookkeepers and acccountants are notorious for these kind of crimes but this one sounds a bit off her rocker.
Not having put away money for the period after 2008 proves she must be mentally deficient.
I know of at least a dozen friends and acquaintances who have gone thorough this and a close lady friend who lost a 12 million dollar home in the Hamptons last year because it was attorney who recommended the accounting firm who handed hers over to one person.
Mostly widows or divorcees are usually the targets when the estate is under #100,000,000. She is not or has never been generous with her wealth, which would have benefitted her each year when she would see her tax records.The I.R.S. is working overtime to weed out the corrupt super rich and their formulas for hiding money are now almost
obscenely naive. Pay your taxes.