Hi Kristen,
The better options or possibilities I’m aware of in and around the Minneapolis/St Paul area (subject to making sure that any mattress you are considering meets your specific criteria and the quality/value guidelines I linked in my last reply) are listed in post #2 here.
The only one that I can see that may meet your criteria (based on a quick scan) would be the Naturepedic mattresses at Moss Envy but you may need to check with them to find out whether they can make any of their mattresses that include wool batting without it (possibly with a prescription).
Phoenix