I really like the design of your site, it's refreshing and the template (or did you design it?) is lovely.
I agree with your potential client that the information is sparse - and the feedback of a website visitor is priceless so run with it! See where you can expand on your services, perhaps add a business philosophy page, any testimonials you might have (I know this one is tough if you've just opened for business), perhaps add an image of yourself and your partner on the 'about' page, spend more time going into detail about what a VA can do for the client - add more client-focused info....just a quick brainstorm...
P.S. I don't see a single whit of
SEO on your site - not even a proper page title??