But why should she pay for a completely separate host/account just to get a web GUI for DB access? Like I said, there are PHP/MySQL and ASP.NET/MSSQL web GUIs, so I thought that there'd be at ...

If you need to allow remote connections to your MySQL server, see how you can easily accomplish that task.

If you're looking for a solid web-based Linux admin GUI, look no further than the tried and true Webmin. Jack Wallen shows you how to install it on both Ubuntu Server and CentOS 8.