Will the one-year work experience gap without proof affect her application in UK/New Zealand for a Master's?

It depends. A one-year work experience gap without formal proof can make it harder to validate your experience, which may weaken your application.

Most master's programs in the UK and New Zealand do not require work experience, but documented proof - such as experience letters or references - can strengthen your profile. Without proof, admissions committees may overlook that period.

To improve your application:
- Clearly explain your roles and skills from the gap year in your Statement of Purpose and CV.
- Obtain references from supervisors or colleagues if possible.