The fact that she is in jail for tickets (alone) will not get you into position for a psych eval....however....if you need to get her served with documents to pursue a guardianship or psych eval, this is an opportunity to really push it forward while she is confined.  You need to visit with an attorney that handles guardianships so press the issue forward.  Before you visit with the attorney, take some time to make a timeline of events and issues so that the attorney you visit with will have a clear understanding of her mental health issues.