I have been doing a maternity cover role for some time now in my regular organisation. Recently the person I am covering for has started to make her presence known. Having return to work meetings with senior managers then sending me a load of work to do. She is not to be back at work for some time. I feel so undermined that this is happening. What can I do? My current reporting line is also unclear so that doesn't help. Can people "issue instructions" whilst on mat leave??