syras:
First, I can't cook. So, I wonder how I shall be able to put my lady through on that. However, I can go extra mile to ascertain that she turns one of the greatest cook the world has ever known - as I can put her in school that does that. Besides, I cherish nice scrumptious meal. That's the major love language I have. So, for me, it is compulsory my lady to know how to make one.

Guy sleep now!

Op send her to catering school. its obvious you ain't teaching her well.
besides, the things you mentioned she does are cooking mistakes , even a seasoned chef is prone to make once in awhile.
if you can't afford a catering school, you can solicit for the help of your female friend or sisters that can cook.