Hi! She definitely needs to see a doctor......one outside the methadone clinic. They are going to probably let her go anyway.
Your friend has a complicated situation that is really beyond the scope of this forum...
She definitely needs to be under a doctor's care. Opiates and benzos are a dangerous combination;they ,in combination,cause serious respiratory depression.
Get your friend to an urgent care clinic to be evaluated.
Let us know how she is...