My wife is getting iTunes charges every day that she shouldn’t be getting. How do we stop this?

Bear,

First determine if they are real charges on your account, or just scam phishing messages. Phishing messages falsely claiming that you have a charge from Apple are unfortunately very common.

But if it is a real charge on your account, follow the steps in here:

If you see 'apple.com/bill' on your billing statement - Apple Support