Karen said: "This week has been a unique time in British politics and politicians were expected to attend on both sides including those who are sick, including myself.
"There were rebellions on both sides of the House and my presence was required on Monday, Tuesday and Wednesday. I was brought in every day in a car to vote, including very late into the night on Monday. This is a unique way of working, but this is my job and probably a once-in-a-lifetime vote.
"The Brexit bill has now passed through the House of Commons, receiving its Third Reading on Wednesday (8 February). I am delighted because, as everyone should know, my position has been clear all along that we should leave the European Union, and 62 per cent of the Redditch people voted this way last June.
"I spoke personally to the Prime Minister on Monday who thanked me for returning in difficult circumstances."
Karen is now back in Redditch and hopes that very soon she will be able to resume part-time working, subject to her doctor's approval.
Her London and Redditch offices are both working normally.
Redditch has been my home for nearly 20 years and it has been a huge honour to have represented its great people for the past seven.
Sadly due to ill health I have decided not to stand for re-election. There is nothing more important or rewarding than helping people, however I need to be fully fit to be able to undertake the job properly.
I am immensely grateful to all the fantastic people I have met during my time as a Member of Parliament and want to say a huge thank you for all of their support.
Redditch deserves strong and stable leadership. Every vote for Theresa May and your local Conservative, Rachel Maclean, on 8 June will strengthen our hand in negotiations to get the best possible deal for Brexit and beyond, leaving Britain stronger and better off for the future.