Sexual response and orgasm in women are complex processes that are influenced by a myriad of physiological, psychological, and contextual factors. It's not uncommon for women to experience challenges in reaching orgasm, or to "lose" it right at the end. This phenomenon, often referred to as orgasmic dysfunction or anorgasmia, can be influenced by several factors.

1. **Psychological Factors**

Stress, anxiety, depression, or past traumatic experiences can interfere with the ability to reach orgasm. If a woman is mentally preoccupied or anxious about reaching orgasm, this can create a kind of "performance pressure" that might inhibit orgasm.

2. **Physiological Factors**

Certain health conditions, medications, hormonal imbalances, or aging can impact a woman's ability to orgasm. For example, conditions such as diabetes, heart disease, neurological disorders, or menopause can all affect sexual response.

3.**Relationship and Emotional Factors**

Trust, communication, and emotional intimacy play crucial roles in female sexual satisfaction. If there are unresolved issues or conflicts within the relationship, this can influence a woman's ability to orgasm.

4. **Lack of Adequate Stimulation**

Many women require prolonged and specific types of stimulation, often clitoral, to reach orgasm. If the sexual activity is not sufficiently stimulating, or if it ends before the woman has had enough time to become fully aroused, she may lose her orgasm right at the end.

5. **Sociocultural Factors**

Societal and cultural beliefs about female sexuality can also impact orgasm. If a woman feels shame or guilt around sex, or if she has absorbed societal messages that prioritize male pleasure over female pleasure, this can interfere with her ability to orgasm.

Understanding and addressing these issues can help improve sexual satisfaction. Open communication with partners about sexual needs and preferences, maintaining a healthy lifestyle, seeking therapy for psychological issues, and consulting with healthcare professionals for physical concerns can all be beneficial.

Remember, everyone is unique in their sexual response, and what works for one person may not work for another. It's important for each woman to understand her own body and needs, and to seek help if she is concerned about her ability to reach orgasm. It's also important to remember that while orgasm is often a pleasurable part of sexual activity, it doesn't have to be the sole focus or measure of a satisfying sexual experience.