The outside wall of the house does not separate your property from hers. So it is not a "party wall" as defined by the Party Wall Act 1996.The wall between the 2 windows is where she is proposing to site the flue (bold white chalk mark), ie on a party wall...
"without prejudice
Dear .....the reality is, because of the layout of my kitchen there is only one place that is suitable for fitting the boiler. The boiler will be fitted in my kitchen, within my property. It is therefore completely unreasonable to be expected to reconfigure my kitchen (at who's cost???) for some proposed plans that may not be approved.
rgds ,,,,, "
I just love the 'without prejudice' bit, since if ever there were prejudice against my proposed planning permission (which I don't even intend to build, just use it to help sell my property, though I don't see why I should tell her this!)
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