My wife recently applied for a Schengen tourist visa at a Spanish consulate in the U.S., and it was a very unpleasant experience. She provided everything that the consulate website said was required, including three months of bank statements, which showed her as a co-owner and a total deposit amount many times more than the required funds for the length of stay in Europe, prepaid cruise, prepaid flights, evidence of credit cards, etc. Yet, the Spanish demanded further proof of her financial support by asking for our marriage certificate, copies of three months worth of my paycheck, proof of my employment AND a statement from me that I would be financially responsible for my wife's short stay in Europe.
The Spanish's attitude makes me sick! It should be sufficient if a person wanting to visit Spain shows sufficient funds of her/his own. I was tempted to say in my statement-of-financial-support that we would be more financially responsible as the country of Spain and would not require a BAIL-OUT, but figured that would doom the visa application.
We have applied for Schengen visas from other countries in the past, with much more reasonable requirements.