First of all, I can understand your situation. You are 79 years old. Unless your wife is 40 years younger, long term benefits can not be reaped. So your wife is condemned to "trading".
Unfortunately, most "short-term" traders lose money, as every (transperant) international broker/trading platform will confirm.
It can happen, that the "retirement money" does not cover the increasing cost of living as planned. To fill the "gap" by trading the markets resembles going to the casino.
Your wife operating with 1000 $. I assume 500 $ profit per month would help your financial situation. Right? If she manages to do this month after month she would dwarf any investement Guru that ever lived in recorded history.
Talk to her like a Dutch Uncle. If she is younger than you she may find gainful employement somewhere, increasing your monthly budget in a risk free environement.
You and your wife will have to "face the music". As unpleasent as it may be.