It's all a matter of taste really (see what I did there)!
An espresso is "just black coffee" made under pressure with a machine. I will not drink instant cooffee ever as I think its duisgusting and much prefer freshly ground beans. I'm lucky as my mate's an air hostess for Air NZ so she brings me in a fresh supply of freshly roasted beans a couple of times a week which pleases me.
Seriously though, if your Mum's into fresh bean-based coffee, but doesn't drink it every day then the Gaggia may be a bit much. An Italian aluminium stove top jobbie is great and in my view, much nicer than a cafatiere brew and just as easy to make.
Maybe you'll make a Barista out her yet!