Dreams that evoke feelings of horror, fear, or paralysis can often be quite unsettling. Here’s a possible interpretation of the elements in your dream:

1. Upside Down Face of Your Mom: Seeing a loved one, especially a parent, in a distorted way can symbolize feelings of confusion or a fear of losing connection with that person. It may also represent unresolved issues or anxieties related to your relationship with her.
2. White Dressed Figure with Black Face: This figure could symbolize a contrast between purity (white) and negativity (black). It might represent something in your life that seems good on the surface but has darker undertones, or it could be a manifestation of your fears.
3. Sleep Paralysis: Experiencing paralysis in a dream often reflects feelings of powerlessness in waking life. You may be feeling overwhelmed by situations that you feel you cannot control.
4. Black Surroundings: Darkness in dreams often symbolizes the unknown or fear of the future. It can also reflect feelings of depression or anxiety.
5. Niece and Evil Spirit: Seeing a loved one, like your niece, being harmed or taken by an evil spirit could indicate your protective instincts. You may feel a sense of responsibility or fear for her safety and wellbeing.

Overall, this dream may reflect deep-seated anxieties, fears of losing control, and concerns for your loved ones. It might be beneficial to take some time to reflect on any current stresses in your life or relationships that could be contributing to these feelings. Engaging in open conversations with those you trust, especially family members, may help alleviate some of these fears.