Need hosting & ongoing update/maintenance service for a small Gallery install

A client/acquaintance of mine runs a small landscape design business and needs her small Gallery (about 100 images), hosted somewhere, and periodically updated to the newest versions as they come out (for the usual security/safety reasons). I do the updates for her now, as she has no knowledge of web development-type stuff, but I really don't have time to do this anymore. Does anyone know any reputable companies that I can migrate her Gallery to, where they'll host the site, monitor and maintain it, and update it as the updates come out?

I've heard of lots of hosting companies that are compatible with Gallery, but it's hard to find professional service providers who will get in there and actually maintain the site.

Thanks in advance!