I wish we all had a friend as supporting as yourself before we started our transition. The first thing that you should suggest to your friend is that they need to get a gender therapist that will help her with her gender issues. Gender dysphoria is a real issue and trans people need as much support as possible. Depending on where a person is located, the Endocrinologist who will provide the hormones for HRT (hormone replacement therapy) will require a letter from the gender therapist indicating that she is trans and will benefit from HRT. That should be good enough to get started.
Most of the therapist are doing sessions online and so the therapist does not need to be local.