Is it reasonable that my wife has multiple orgasms almost daily?
What?
What does “reason” have to do with it? They are your wife’s orgasms. If she’s happy to have multiple orgasms every day, there isn’t a problem. Many might envy her.
However, there are the rare and unfortunate individuals that have unwelcome and uncontrollable multiple orgasms. That shit is indeed a problem because the orgasms are excessive and unwanted. Those people usually seek medical attention.
But highly sexual individuals that aren’t obsessed and have balanced and healthy lives outside of the bedroom don’t have anything to worry about and aren’t doing anything wrong.
If you have less desire for partnered sex than she does, you aren’t obligated to address her high level of desire. She’s free to masturbate on her own when you aren’t interested.
If you think you should have some control over her high libido because you think it’s “wrong” or “defective” then I would advise you to adjust your thinking or part ways.