It sounds like you are experiencing a difficult situation. It's essential to prioritize your own well-being and take steps to heal from this attachment. Here are some suggestions to help you move forward:

1. **Acceptance:** Acknowledge your feelings and accept the reality of the situation. It can be painful, but facing the truth is the first step towards healing.

2. **Create Distance:** To start detaching yourself from her, consider minimizing interactions and creating space between you two. This can help in reducing your emotional attachment.

3. **Focus on Yourself:** Redirect your attention and focus on your own growth and happiness. Engage in activities that bring you joy and spend time with friends and family who support you.

4. **Seek Support:** Talking to a trusted friend, family member, or a therapist can provide you with guidance and emotional support during this challenging time.

5. **Let Go of Expectations:** Release any expectations you have about the relationship or her feelings towards you. It's important to let go of the desire for a specific outcome and instead focus on your own well-being.

As for recognizing signs that she is no longer interested and may be avoiding you:

- If she consistently avoids spending time with you or makes excuses to not communicate with you, it could be a sign that she is not interested in maintaining a relationship with you.
- Pay attention to her body language and non-verbal cues. If she appears disinterested, avoids eye contact, or seems uncomfortable around you, it may indicate that she wants to keep her distance.

Remember, it's okay to feel hurt and upset, but prioritizing your own emotional well-being is crucial in letting go of attachments and moving forward. It may take time, but with self-care and patience, you will be able to heal and open yourself up to new and healthier relationships in the future.