[Again, stuck to the barn door with the sealing wax.]
Mrs Barton-Stark,
I am glad that Annie is treating you respectfully, and that the work is not a great additional burden to you.
To speak truthfully, I am entirely inexperienced with farm work. Or indeed any form of manual labour. That being said, I am certainly much more used to living in the country than within these confines of metal and technology, so perhaps you are not too far wrong with regards to 'getting your hands dirty'.
Provided that there are some simple tasks I can assist you with, rather than being more of a hindrance than a help, I should be happy to do what I can.
I shall indeed, and thank you, Mr Fitzwilliam Darcy