If the W has retained the attny before the meeting with W, W's attny and Tridoc then the attny should have explained to the W that any info shared in the meeting with the 3 of them is not confidential.

My sister went with me when I was prepped before court and I had to sign a document from my attny stating I knew our meeting was not confidential as my sister was present.

If the W did not yet retain the attny I am not sure how that works... as of right now w/o a retainer/contract nobody represents anybody.