It doesn't matter what you call the meeting it is still a disciplinary meeting. Ask your manager to provide the evidence that support her actions that you have not complied with Company policy or procedure. Not what she tells you, but shows you to support her concerns.
It may be just an excuse on your Managers part to start a record of a event to build a case. The meeting should be viewed as corrective action not punishment on the managements part. The outcome could be training , counselling mentoring etc.. your manager should have a toolbox of support for their staff before the need to discipline
Check your Company staff handbook on their disciplinary/ Grievance policy as to often weak managers fail to follow their own Company procedure. Do not accept any notes of a meeting that are not a true reflection.As a good practise there should always be a management, or your own representative taking verbatim notes that you can both sign off as a true reflection of the meeting.and any agreed actions as an outcome.