i wonder if this is just one of those cases, where once you start looking for evidence, you surely do find it........................
im assuming you dont know for sure if the private no that rung so early in the morning was hers ??? you just think its her because of what is happening ? could it just have been a wrong no ?
if i couldnt live in the same area as my ex boyfriends there would be an awful lot of the area i couldnt live in !!!! why shouldnt she chose the same area........ .................. i have lived 3 streets away from an ex for 4 years, and not seen him once !!! so what does it matter ?
if her job is in sales, and your office could become a customer, then i think it could be deemed to be very professional of her to be able to put her feelings aside and go for the sale ??
i really do think that you are being paranoid, based on the information that you have given here ..................................... there might be more of course, but i cant see these jigsaw pieces fitting together at the moment
Regards