I made this table for a customer about 8 months ago. Sorry for the sideways pic.
Rachel's table.jpg

She told me this happened on the corner. The top is 3/4" thick but I put an 2" wide edge around the whole edge..I assume this happened because the wood contracted.
corner.jpg

She wanted a thick top like this.
X table.jpeg

How do I go about making her table to look thick like this one? I can't find 2" thick wood around here to make a complete top. And if this pic has a false wider edge, is it not moving because the slats in the table don't appear to be glued together like the one I made? I see lines in this top where the boards might be butted together but obviously in my table, the whole top is glued.
Closeup.jpg

I need some advice because I've made several tables like this and I'm worried I might need to make them over. Nobody else has called me yet.

Thanks

Eddie