I know you're not exactly being serious here, but I know a restaurant chain that actually calls their mashed potatoes smashed potatoes. Apparently leaving them extra lumpy makes them smashed instead of mashed.
They're pretty far gone from shame, embarassment, or believing anything that makes them look gullible. So even if you did dupe them out of their money and donate it in a way they find displeasing, they are so well practiced at mental gymnastics as to avoid admitting they were deceived or feeling bad about it. And then you would have just exposed yourself to liability for fraud and probably doxxed yourself, becoming a target of harassment or worse.
If charging speed were your top priority, sure. She doesn't use her phone hardly at all so the battery rarely gets depleted much, therefore how quickly it charges isn't really that important. Not having to mess with a wire makes it more convenient to grab and go when she does need it, and more convenient to put it back when done. And no risk of damaging the USB port.
When my mom finally ditched her land line and ported the number to a smart phone, getting a wireless charger that propped the phone up was a nice way to set up a sort of designated place to keep the phone (where the landline phone had been) so that there's less chance she misplaces the phone or forgets to charge it.
What was the marketing that convinced you to buy it way back when?