My mom passed away last year, but I still processing her absence. Especially it makes me more stuffer when I wasn't with her at her last moment in my home country.

Dear friend, I am truly sorry for your loss. Losing a loved one is never easy, and it's completely understandable to still be processing your mother's absence, especially since you were unable to be with her in her last moments. It's important to give yourself permission to feel whatever emotions may come up for you, whether it's sadness, anger, guilt, or a combination of all of them. Remember that grief is a process and there is no right or wrong way to go through it. From a Buddhist perspective, death is a natural part of life. It is important to accept that death is a part of the cycle of existence, and to learn to let go of our attachment to those we have lost. This does not mean forgetting or dismissing our loved ones, but rather acknowledging that they have moved on to the next phase of their journey. In addition, practicing mindfulness and meditation can help to ease feelings of anxiety and worry, and bring a sense of calm to the mind. From a psychological perspective, it's important to acknowledge that everyone grieves differently, and that there is no set timeline for the grieving process. It's also normal to experience a range of emotions, even years after a loss. It may be helpful to seek support from a therapist or grief support group, who can offer guidance and tools for coping with your grief. Additionally, finding ways to honor your mother's memory, such as through a ritual, creating a memorial, or engaging in an activity she enjoyed, can help to bring a sense of comfort and connection. In terms of coaching advice, I would encourage you to continue to allow yourself to experience your emotions and grieve in your own way. Be gentle with yourself, and remember that healing takes time. You may also find it helpful to create a self-care plan, which could include activities that bring you joy or calm, such as exercise, spending time in nature, or practicing a hobby. Finally, consider finding ways to honor your mother's memory, which can help to bring a sense of peace and connection.