in that case, you need to buy her only dividend/reit funds...
brainwash her that she can spend all the distribution received, nothing to do with capital gain/loss (for example reit still collect rent and pay u no matter how market judge the stock price).

the stock/reit the fund buy, suppose will generate enough dividend to pay as distribution,
which theoretically better than these "capital gain" fund.

in developed market, the average dividend yield is about 2%, which the number is at least double in our emerging region,
that should enough to cover the "distribution yield" we received annually.