Need help with lens.

Admittedly I don't know much about the photography world...But my wife does a little bit. She loves it in fact. She's more into the old school cameras and such. Anyhow, She was given an old Canon EOS A2E but it didn't have a lens. She was going to check today at a camera shop to see if it even works. We were told it did. I think it just needed a new battery. She rooted around her camera stuff and had a Canon 35-80 lens that fit and should work for her. I'd like to get her a bigger more powerful lens for Mothers Day but don't have any idea on what to even start looking for.

That's were my WW peeps come in. Help me out here. What should I be looking for?

Thanks all...