I don't think You have to show martial status in passports. But you would need evidence of marriage.
Her
Degree should be good enough for the
English language requirements, if it was taught in English, etc.
I think her income may be included as she is legally in the UK. Best to get details in
Appendix FM-SE.
Your ILR application and her FLR(M) application are separate applications. You should succeed before they can process her's.
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