Although Access is known as a database it is actually a fully fleged application development platform with facilities for database construction. It has the ability to fully integrate with and automate the other MS Office components as well as Windows itself. It literally takes years of experience to fully realise its potential.
Base in Open Office doesn't even come close to what Access can do. However it might be enough to do what she requires if she just needs a simple database.
However if she is serious about database development then she should not waste her time on Base and get straight into learning Access.