Check her handphone.....
Usually SMSs & phone bills will increase. My ex-wife even have
a virtual paging service to avoid my trace.... But she is to stupid
to leave her bill just by the table.
Usually Tried, Refuse sex, Always not enough $, not like together
with husband/boyfriend, Have SMS or phone calls early in the
morning or very late at night, will argue at the slightest issue,
put on make-up a lot.