YUSUFALI: If any of your women are guilty of lewdness, Take the evidence of four (Reliable) witnesses from amongst you against them; and if they testify, confine them to houses until death do claim them, or Allah ordain for them some (other) way.
PICKTHAL: As for those of your women who are guilty of lewdness, call to witness four of you against them. And if they testify (to the truth of the allegation) then confine them to the houses until death take them or (until) Allah appoint for them a way (through new legislation).
SHAKIR: And as for those who are guilty of an indecency from among your women, call to witnesses against them four (witnesses) from among you; then if they bear witness confine them to the houses until death takes them away or Allah opens some way for them.
Even if she were confined to her home she would presumably still get food delivered to her from friends and family. House arrest is hardly life-threatening.
What about its duration? It would be for as long as the media see fit to camp outside her home. Eventually they will get tired of it and get on with other more important and current events.
The Koran also gives the option of mercy at 4:17.
YUSUFALI: Allah accept the repentance of those who do evil in ignorance and repent soon afterwards; to them will Allah turn in mercy: For Allah is full of knowledge and wisdom.
PICKTHAL: Forgiveness is only incumbent on Allah toward those who do evil in ignorance (and) then turn quickly (in repentance) to Allah. These are they toward whom Allah relenteth. Allah is ever Knower, Wise.
SHAKIR: Repentance with Allah is only for those who do evil in ignorance, then turn (to Allah) soon, so these it is to whom Allah turns (mercifully), and Allah is ever Knowing, Wise.
She did not repent "soon afterwards", did she? She even tried to make a career out of her notoriety by granting interviews to all and sundry wanting the story to run and run.
Is Lewinsky's interview evidence of remorse? I would suggest not. She is clearly triumphant and gleefully reliving her White House experience.
A genuine display of remorse would be along the lines of
https://ask.fm/oneparty4all/answers/137664891009 which would be perceived as a penance.
What would you tell Monica Lewinsky to do if you were her mother?
I would tell her to decide whether she wanted to capitalise on her notoriety or retire into obscurity. If the latter she should just change her name and live abroad and perhaps learn a foreign language after becoming a teacher of English As A Foreign Language. If the former, she could consider telling cautionary tales about the pitfalls of being a slut as well as the social problems they cause. She could perhaps go on a talking tour visiting the cities most affected by illegitimacy. The act of discovering which country in the world most suffers from bastardy would be interesting, and then visiting them in order of their bastardy. I would as her mother suggest that Claire Khaw accompany her in this drama documentary to make things more interesting.
If you were a teacher, what would you tell Monica Lewinsky to write out 100 times?