It sounds like your wife may be struggling with an online shopping addiction, which can have serious consequences for both her and your relationship if left unaddressed. Here's a detailed approach to help you address this issue:

1. **Open Communication**: The first step is to talk to your wife about your concerns in a non-judgmental and supportive manner. Choose a time when she is not busy or stressed and express your feelings using "I" statements. For example, say, "I feel worried when I see our credit card bills because I'm concerned about our financial security."

2. **Educate Yourself**: Learn more about shopping addiction and its effects. Understanding the psychological aspects of the problem can help you empathize with her situation and offer appropriate support.

3. **Encourage Professional Help**: Consider seeking help from a therapist who specializes in treating addictive behaviors. A professional can provide strategies and interventions that can help your wife manage her impulses and develop healthier coping mechanisms.

4. **Set Boundaries**: Together, set clear boundaries around spending habits. This could include creating a budget, limiting access to credit cards, or setting up a system where purchases require mutual agreement.

5. **Support Groups**: Encourage participation in support groups, either in-person or online. These groups can provide a sense of community and understanding from others going through similar challenges.

6. **Engage in Alternative Activities**: Find other activities that can serve as healthy distractions. Engaging in hobbies, exercise, or socializing can reduce the urge to shop excessively.

7. **Monitor Progress**: Regularly check in with each other to monitor progress and adjust plans as necessary. Celebrate small victories along the way to keep motivation high.

8. **Consider Financial Counseling**: If finances are severely impacted, consider consulting with a financial advisor or counselor who can help manage debts and create a sustainable financial plan.

By approaching the situation with empathy, understanding, and proactive steps, you can work together towards resolving this issue and strengthening your relationship.