23% on EVERYTHING is more noticable than 7.25% ? Ya think ?
If she thought she was paying nothing under the current sales tax, three times nothing is still nothing. I'm guessing she doesn't think of sales tax as an actual "tax". She no doubt just thinks of it as an annoying little extra calculation she has to make when buying something.
But if you were able to make her aware of it, then she'd be aware of it regardless of whether or not businesses have to pay it for what they buy as well. And any increases in the tax would be noticed by her either way.