The umlaut is used in a variety of different languages to indicate a specific way of prenunciation. It is also commonly used in the names of heavy metal bands to suggest high levels of heavy and metal. In the case of Petra’s name, we can safely say that the umlaut is used purely for grammatical and phoenetic affect, due to the very non-heavy metal nature of her beautiful collage work.
In a kind of Nordic William Morris way, Petra has the enviable ability to make layers of colour transform in front of your eyes into patterns depicting love, forests, and creatures. This ability has not gone unnoticed, and last year she had her work featured alongside that of shape-master Noma Bar. Well done her!