She has many resources for counseling, she should take advantage of those (Militaryonesource, medical, fleet and family services, RAINN, the chaplain). Taking care of herself is essential. If it is being investigated, that is good.
Ensure daughter gets copies of her medical record, line of duty investigation, local police reports. Then place these documents in a secure lock box. The VA will need them for any compensation that may be due. Get these document because some times over time they have a tendency to walk away...... Have daughter google: Veterans Benefits Network, it has a section for women. It a very good civilian site.