Is it normal for the psychologist interviewing a VA claimant to dismiss trauma due to sexual assault because of lack of evidence?

A former soldier of mine had her interview with a VA psychologist to determine her eligibility for compensation. During the interview, he asked if there were any instances that caused trauma, PTSD, or other significant social trauma. She said "yes," and mentioned a case of military sexual trauma (MST), including who did it to her and when. He responded by asking if she had told anyone or had any proof. She said no, because she was naive at the time and unaware of what was really going on, as well as thinking that some form of retaliation would occur. The doctor said that in these instances various things could count as proof, but that if she had none, they would have to move forward with other claims. She said she had none and he dismissed the MST. No decision has been made, but she is not feeling like she will get the help she needs for this because of her decision not to report anything. What advice do you have?