I would have thought Debbie, but hesitated over the start date. Debbie rejoined around 2008 after being away for a few years. I dare say a trawl through her blog/website/social media would give the precise dates of the gap in her time with QVC, but I can't be bothered.
That CV doesn't chime consistently with the sweetness and light on screen.
I think the creative thing is all the presenters jockeying for position to get their "own" shows. Debbie nabbed a pre-Christmas gifts under £X which ran for a few weeks. Julia has had her fashion on Friday for ever. Ali Young has had In the Salon with Alison and various different re-boots. Kathy has her "Style" show. At one point Catherine had her "Tech" show.
The one that is worth seeing is the rarely-seen Dale and Charlie jeweller double-handers. They are very entertaining together... but I wonder how much selling actually takes place.
Anyone presenting a CV is going to make sure it reflects them in the most positive light, even if the truth gets a little stretched or strained in the process. Many jobs are very competitive indeed... and as long as there are no flat-out fabrications, and you can demonstrate what you put in your CV, you would be OK. For presenters, they will also undoubtedly have showreels to send out to any prospective employer.
I think that most, if not all, QVC presenters (like the guests and models) have other strings to their bows and don't solely rely on QVC as their source of income.
I'm sure all the presenters get involved in the HR side of things - how else do they screen-test prospective presenters and guests if they don't draft in the current presenters? Catherine is just making the most of something which must actually be a commonplace necessity in her line of work with QVC, and fair play to her.