Call your friend and express your sorrow for what she’s going through. Don’t get upset if your friend does not immediately return the call. She may not feel up to talking, or may have to comfort her own share of people. She will get back to you when she can. In the meantime, just extend your well wishes in a voicemail message.  Your voicemail might sound like "Hey, X, I'm really sorry about what happened. I understand that you may be busy or not want to talk right now. But, I wanted to call and tell you that I'm thinking of you and I'm here if you need anything." Many people often have no idea what to say to a friend who is grieving or upset, so they choose to say nothing. Even if you don’t have all the right words, your friend will appreciate you thinking of her and acknowledging that what she’s going through is important. Oftentimes, when people are mourning, everyone states “call me if you need me”. This person may feel like she is a burden if she calls you, and, therefore, she never calls. A better method is to be specific about when you will call so that she knows she can count on your solace. Leave a message or confirm with your friend that you will check on her often. For example, say something like “I will call back on Tuesday after work to check on you.” Sometimes all people need is to feel like someone's listening to them. Give the gift of listening to your friend. Truly take in what she is saying – tone of voice, words, and what isn’t being said. Concentrate and don't let your mind wander off. Ask clarifying questions during pauses to show you are following along. After your friend has finished talking, summarize what you have heard and then make a statement that will reassure her that though you can't wave a magic wand and heal everything, you were listening and will be there for her. Even a reflective statement, such as "I hear that you are sad about ___. I feel awful that this is happening to you, but I hope you know I'll be here for you," can do a lot for someone. So, maybe you can’t drop by...

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Write a summary of the previous text in Vietnamese:
Liên lạc với họ. Đề nghị được gọi điện hỏi thăm. Rèn luyện cách lắng nghe tích cực. Gửi đến người đó yếu tố thể hiện sự quan tâm.