I think "sense" left the building when
this plot was written /planned.
Probably Lisas absence was due to health
of actress.Tho no comment is made-but
health is a personal issue and she may
have a recurring problem.
I agree. Much as we like to know what's happening, if any actor/actress has a health/personal issue, it's their business and we have no right to know. We should respect their privacy.