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Except for the fact that the corporation cannot take action if either of you disagree, the corporation could sue her for the money spent for her personal expenses of litigation. It is possible that you could bring a derivative action against her.
Since you are in a community property state, your assessment ("If we get legaly separated I feel that she would need to reimburse the funds used from our corporation and then should split the left over 50 /50 .") is entirely correct.
Yes, it seems that way.
Yes. That is how community property is supposed to work.