With your history, Moose, she is the crazy one to question the diagnosis. And I agree, she clearly has her agenda that she is pushing. Stay away.
This is only tangentially related, but prevalence-wise, alcoholism is much more prevalent than bipolar. Since many alcoholics have children, being an ACOA is also much more prevalent than being bipolar. If she is saying that being an ACOA leads to the symptoms you have experienced for two decades, why does such a small portion of ACOA population go on to experience those specific symptoms?