She has stayed at her uncle's house since she was ill.
It is six years since I was in Seattle.
For sentence 1, does it imply that after her illness was cured, she has stayed at her uncle's house? Or it should be literally understood?
For sentence 2, does it imply that it has been 6 years since I left Seattle, which means the lapse between the moment that I left Seattle and present is 6 years?
Also, if I understand sentence 1 correctly, here is another sentence,
- I haven't seen him since he lived in Boston.
Does this mean I haven't seen him since he left Boston?
Thank you in advance!!