Is money my wife has in a Fidelity account in jeopardy if I file personal bankruptcy?

It depends on what type of account it is - is it a trading account or a qualified retirement account? If it is a simple trading account, then you will be required to disclose the account to the trustee who could (if they think it is viable and worth it) go after the money. It it's a retirement account, you'll still disclose it, but then I'd say it is 100% safe.