I'm not sure by looking at your question. Assuming you are saying you and your spouse live and work in MO and your spouse's employer is based in FL then yes you need to file a MO resident return. You will be taxed by MO on all income from all sources. Since there was nothing withheld for MO taxes by the FL employer you may owe taxes on that income.
I recommend a MO form W4 be submitted to the employers to withhold MO taxes going forward. (Click here)
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