What do you mean by "wider"?

Let me put this in context for you.

A while ago, I was on the phone with a client's rep discussing a project we were working on. She wanted to make a header image on an email we sent out bigger. This image is composed of a logo on the left, some character art in the middle, some packaging of clients' products on the right, and a background setting. Below is our conversation:

Her: Could you make this image bigger please? Everything is too close together.

Me: So you wanna spread the logo, the art and the packaging out a little?

Her: Yeah, that would be great.

Me: OK, so I can just make the background wider and spread them farther apart.

Her: Right, we just like it bigger.

Me: ... You want the elements on there to be bigger? or spread out?

Her: No, right, there is no space between the logo and everything else.

Me: ... Do you want me to make everything bigger and spread them out?

Her: ...

Me: I can make the background wider, and separate the elements more. Or I can just make the entire image bigger.

Her: When you say "wider" ... what do you mean by "wider"?

Me: ... (What do I say to explain wider?)

Me: It's ... width wise... left to right.

Her: Ooooohhhh, I thought you meant, like, up and down...

Me: No, that would be taller.

Telephone is a double edge sword. You are glad that your client can't see your shockingly disgusted face, but you are also saddened a little that you can't reach their neck and choke them.