Currently, I work as a part time (0.2 FTE) fixed-term (1 year) Research Fellow in the field of public health - this is not my primary area of research or expertise, but the project looked interesting and had some mutual research interests - primarily the data analytics aspects.
However, as time has gone by (half way), all I have done is programming the primary tool for data collection (Android based), and now the supervisor is started to strongly go on about loosely-relevant web design for another one of her projects.
I have declined to do the web design, as I am not proficient in it and simply not interested - also reminding her that web design was not part of the original plan, nor do I possess the qualifications or experience.
She has mentioned that she has collected data for the main project and in her words 'to save me time', has had a grad student analyse it. When I politely reminded her that this data analytics was what I was employed to do and are qualified in, she ignores the email and goes on about the web design (and about superficial improvements to the Android program).
How can I steer a research fellowship back to the main initial focus (data analytics) rather than the supervisor's programming needs?