Labor Code 1198.5 is the controlling statute which requires an employer to permit a current or former employee or their "representative" the right to review the employee's personnel file, and to obtain a copy of any document that displays the employee's signature. Refusing to permit your fiance' to assist you was not unlawful. Had you stated that your fiance was your "representative," then the employer would have had to permit your fiance access to the records.
You could have someone who can translate for you, make a new request to review the records, and if the employer refuses to permit the inspection, then you can file a discrimination claim
with the Division of Labor Standards Enforcement (DLSE), and DLSE will force the employer to comply.
Hope this helps.
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