DD is nearly 2.5 yo. She has always been very affectionate with others. She hugs and kisses strangers, adults, other children. Recently, she was trying to hold hands with another 2.5 yo as they were walking. The other toddler didn't want to hold her hand and kept pushing her hand away, and I ended up saying, 'he doesn't want to hold your hand!' She didn't seem affected by this. Similarly, the other day, she was trying to kiss a little 3yo girl at the park that she met, but the 3 yo girl just pushed DD away. I didn't say anything. Honestly, I don't know how to react when these things happen. I don't want to encourage DD to become aloof, but I'm afraid she will get her little heart broken if she persists in kissing and hugging other children who are not welcome to her signs of affection. Any advice please?