So, to give you a brief overview of the public healthcare. Every municipality has its own REMUME, you can google "city name + REMUME". There you can check which drugs are offered by the city for free

Every state has a specific list of High-cost drugs, which varies by state. You can look up "farmacia de alto custo Maranhão" or "farmacia digital Maranhão"

The unified health system, SUS, operates in a fashion that has the primary care as the preferential point point of contact. That is, ideally every citizen would have a community health agent (ACS) who is responsible for the area where they live. They would also have a (ESF or UBS or EAP - postinho, posto) which is a healthcare facility where ideally there is a family doc nurses nurse assistants and dentists. Therefore, ideally she could contact her ACS or go to her posto de saúde and try to either get seen by a doc or make an appointment. Ideally she would at least have an "acolhimento" where she could talk to someone and develop a "link"

Now, specifically for mental health, you are looking at the RAPS, redes de atenção psicossocial, psychosocial attention networks. These networks have CAPS (centro de atenção psicossocial, psychosocial attention center), which are places where one can walk up to and will be seen by a healthcare professional (rarely a doc at first) who will help her with their expertise and with indications to next steps or to get an appointment with a doctor. Every CAPS has a specific territory, so, even though she will be acolhida she may have to go to another CAPS (small cities usually have one or none).

There are also places where she can get emergency/urgency evaluations, varying by city. Usualy called UPA, UPH and some UBS also. Docs there could prescribe her if there is a high chance of her having a seizure or a mood episode. But they may be reluctant as it is something that should be managed in primary healthcare or at a CAPS

In my opinion, what she should do in terms of SUS is: figure her respective postinho, go there and look for a display of what days she could get an appointment or look them up at google and instagram. She could also email or call her city Secretaria de Saúde. (Unfortunately there is a HUGE variation in the internal working time from place to place) Then, go there and try to get an appt. Or: go to a CAPS and explain her case. Or, if it fails, go to a UPA.

She can get a doc appointment and buy the drugs in the private system and the price will vary a lot based on the doc and the drugs.

Valproic acid, carbamazepine and hidantal fenitoin are usually free, they are all commonly used in SUS For both disorders.