Determine the valence intensity of the tweeter's mental state conveyed in the tweet "@EmberXiao ❝ Ah, I see! Clever! ❞\n[Ruby nodded her head, putting her hands by her sides before smiling up at Yang.]\n❝ Hehe, since when--". Provide a score from 0 to 1, where 1 signifies very positive and 0 signifies very negative sentiment.