Determine the emotional tone of the following tweet: "#RIP30 Heaven is rejoicing because they've gained an angel, the Keifer family are in my prayers 💙🙏". Use the provided emotions: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. Respond with the emotions you identify or "neutral or no emotion".
joy, love, optimism, sadness