I would cation against a French speaking therapist or one with limited English. Unless your daughter is a native speaker, there will be an adjustment period to speaking only French everyday. If your daughter can not completely articulate her feelings or if a therapist can’t understand her completely, sessions have the potential to be more frustrating than helpful.
I would look for a native English speaking therapist who works with the expat community. If she is going through an American program or university, contact the program staff for recommendations. They almost certainly have had past students in this situation. For the medication, if she brings a prescription from her MD to a French doctor, they will likely be able to write her one she can fill in France. All common antidepressants/benzos are available and inexpensive.
A quick google search turned up this
http://paris.angloinfo.com/af/434/paris-and-ile-de-france-counselling-and-therapists.html