okay, did a little more research:
looks like you have either the acer c720:
https://www.google.com/intl/en-US/chrome/devices/acer-c720-chromebook.html#specs or the acer c7:
https://www.google.com/intl/en-US/chrome/devices/acer-c7-chromebook.html#overviewboth look like pretty good little tools. the big thing to remember about chromebooks is that they are designed to be always connected to the internet. the are built around the idea of software-as-a-service (SaaS in the tech/mktg world) which is basically that old software that you install on your local hard drive is antiquated, bulky, and un-manageable (how is a company realistically supposed to support a piece of code written twenty years ago that some guy has installed on a machine that is older than the customer support person he is talking too?). so, most of the "programs" on a chrome book will actually be web-apps that run from the web-browser: browser based tools like google docs and google spreadsheets replace Word and Excel. These are always the latest version and constantly being updated, so it is an obvious advantage... for the software company. the problem is they are dependent on an internet connection, and a high speed one at that, which means that a significant, though increasingly invisible as the corporate world forgets that life exists outside the internet, segment of the population would not be in a situation to benefit from the light hardware overhead of cloud computing.
sorry, i got on a rant for a second.
anyway, if you have a high-speed connection at your house, and your wife doesn't have to do any heavy computing/is mostly using it to browse the web and check email etc. then you have a great computer for your needs and it should do everything you need. you will need to either get a Google Drive subscription or an external hard drive though for things like documents and photos that you want to store in file form.
does that help?