When first applying for the job with the Reds, she may not have claimed the qualifications on her application.
Further, the job description and selection criteria may not have stated "must have a bachelor degree in .... ... ..." or words to the same general effect.
By all accounts, she was appointed to her current position by Link, and the job description and person specification appears to have been written to suit the incumbent. Not unusual in many industries where the Manager is satisfied that the person can do the job, and the Employer is undergoing reorganisation and rationalisation.
Lastly, having a degree, even a specialist professional degree like Engineering or Medicine, is no guarantee of competence in that field.