Essentially what you are asking is...

If a person holds a UK Standard Visitor Visa, can they use it to enter the Schengen zone as a short-term visitor?

The answer is no. The Schengen regime does not recognize UK visas, and the two types of visas (UK and Schengen) are not interchangeable. Carriers are aware of these rules and will not allow the person to board the ship or aircraft unless the person has the appropriate visa.

Having said that, it's always possible to a UK visa as evidence in a Schengen application. Schengen officials like to see that kind of evidence because it helps establish the person as a bona fide visitor (all other things being equal and all the other evidence is up to scratch).

Note: EU routes... You can look into getting an EU family permit for your wife, but there's not enough info in your question to determine if she qualifies or not.

Essentially what you are asking is...

If a person holds a UK Standard Visitor Visa, can they use it to enter the Schengen zone as a short-term visitor?

The answer is no. The Schengen regime does not recognize UK visas, and the two types of visas (UK and Schengen) are not interchangeable. Carriers are aware of these rules and will not allow the person to board the ship or aircraft unless the person has the appropriate visa.

Having said that, it's always possible to present a UK visa as evidence in a Schengen application. Schengen officials like to see that kind of evidence because it helps establish the person as a bona fide visitor (all other things being equal and all the other evidence is up to scratch).

Note: EU routes... You can look into getting an EU family permit for your wife, but there's not enough info in your question to determine if she qualifies or not.