If she truly has OCD, accommodating her OCD behaviors is NOT helpful — it only grows the OCD.
See this link about it from the International OCD Foundation which includes suggestions about what to do when family members refuse treatment:
https://iocdf.org/families/
Educate yourself as much as you can about OCD (using evidenced-based sources such as IOCDF). OCD treatment is not your standard CBT (which can exacerbate OCD) so your wife will need to find someone trained in evidence-based treatments such as exposure and response prevention (ERP). There are tons of resources on the IOCDF website and on their YouTube channel.
Also, there is a 2024 book titled “When a Loved One Won’t Seek Mental Health Treatment: How to Promote Recovery and Reclaim Your Family’s Well-Being.”
One of the authors is Dr. C. Alec Pollard — a renowned licensed psychologist who works with OCD and anxiety-related disorders with an interest in obstacles that inhibit or interfere with effective participation in treatment/recovery.
Finally, hoarding behaviors are closely linked to OCD. IOCDF has a lot of info about hoarding if you search on their website.
There is hope for you both to live a better life if your wife willingly participates in treatment.
Good luck OP!