People will make money out of any situation but overall people won’t.
Your mother didn’t benefit from a crash. She benefited from a resurgence that continued and bizarrely is still ongoing. And chances are she had to pay more for her next property.
A falling market attracts people with capital. Usually investors. A crash limits lending which cuts out first time buyers. For a long time causing generation rent.
But she did benefit from a crash... because the first property she brought, the one that made her 50k... she couldn’t afford now if she was in the same financial position.
She brought the property for 160k, sold for 210k the same property is now on the market for 260k, she would never of got a mortgage on it, she wouldn’t of had a high enough deposit. So she got on the property ladder when the prices were low, when their was a crash. (What people are hoping for now.) Even if she hadn’t of sold & up-sized she would still be a home owner.
If she was buying now with the same budget she would be able to buy nothing 0.