69 YO sister was sold $2M in deferred annuities, left with only $200K in checking account

My sister was sold about $2 in annuities by her bank. She told them she wanted to invest in something that guarantees no loss of principle. So they sold her $1.2M in 5.15% annuities and $800K in 3% annuities.

She has a mortgage at 2.75 that she pays to the bank with $10,000 monthly mortgage payment on a $1.1M loan.

After fees the 3% annuities pay less than the mortgage. They tell me it's so she can deduct the mortgage interest.

I was made trustee on her accounts and was pretty shocked. Her expenses are about $50K a month and they wrapped up 90% of her money that she can't touch for 3-5 years. She invests exclusively at this bank so they knew her finances.

The good news is that her salary covers the $50K a month, barely.
She sold her company for a $5M stock merger but can not sell the stock for 2 years.
Her home equity is about $2M

The bad news is that she has FTD (Frontal Temporal Dementia), hence the trustee bit.
The really bad news is that she has 3-5 years to live. And how much longer she can work

I feel like the bank took advantage of he by tying up 90% of her cash. Her net worth is around $10M so she now has about 2% of her money that she can access.

The bank won't break the annuities unless she pays the penalty. I'm pretty pissed at the bank and have told them that their investments "Were not in her clients best interest." She lives in California and the attorney general's page talks about selling financial instruments to people over 65. It's considered 'elder abuse' if they are not working in the clients best interest. Especially differed annuities.