Thank you for sharing this question-- this is a population I work with often and enjoy working with and I like writing about it :)
Beyond the abstinence + the meds for the anxiety and Bipolar symptoms, is this client taking an antipsychotic? Are they consistent with this medication? Medications are the front line treatment for psychosis, so this is super important.
Beyond that, treatments that tend to work for this sort of stuff are
psychoeducation-- so help your client understand her illness-- you can flip to the 75th page of this PDF for some good facts on schizophrenia to share with a client, for example https://store.samhsa.gov/sites/default/files/d7/priv/practitionerguidesandhandouts_0.pdf
There's a DBT skills manual that recently came out just for clients with psychosis. I'd flipped thru it and it looks good but I'll admit I haven't used it with a client yet: https://www.amazon.com/Dialectical-Behavior-Therapy-Workbook-Psychosis/dp/1684036437#:~:text=TheDialectical%20Behavior%20Therapy%20Skills%20Workbook%20for%20Psychosis%20offers%20a,and%20anger%2C%20and%20relationship%20disruption.
CBTp is a version of CBT specifically for clients who struggle with psychosis: https://www.nasmhpd.org/sites/default/files/DH-CBTp_Fact_Sheet.pdf
Positive psychology, so focusing on a client's strengths and abilities as popularized by Seligman, is another framework that works well with this population. Here's an article about it: https://www.researchgate.net/publication/316418199\_Positive\_psychology\_and\_severe\_mental\_ill\_health\_Strengths-based\_cognitive-behavioural\_interventions\_in\_psychosis
NAVIGATE is a program used for clients with recent onset of first episode psychosis. Doesn't sound like what you're dealing with, but providing in case you'd like to read up on that: http://navigateconsultants.org/2020manuals/team_guide_2020.pdf