Good Evening,
I would love to help with this site. I have been working with small business for a while to help them get a start in the online space. It does help that I love food and I get to work on my two passions at the same time, food and design. I think WordPress would be a great fit for your client. As it has many plugins that can help build out an amazing site that helps you, customer, see her orders right on the front page. As for season menus, this is an easy update that I would be more than happy to show her how to change. I have some great ideas for her. If interested just message me with questions.
Thanks,
Jeff M