I thought about that too. IMO it was striking because of the contrast between the words and the behavior. Misty was all about "I love you, give me money, I love you, give me minutes, I love you, bail me out, I love you..." I mean, love is always wonderful and it warms the heart and all, but there was little real concern for the feelings and needs of the others, no realization that her parents and grandma and her brother's family need to live and eat and they can't squander all they don't have on her. (Teenagers are often a bit self-centered but it seemed a bit excessive to me.)
And all that overflowing love also seemed incongruent with what Misty said in that LVA test. I don't recall the exact words but it was something to the effect of everybody in her family will betray you as soon as look at you, it's just the way they are. (QED, look at her turning Tommy in for burglary...)
IDK, it just seems like a strange kind of love. The fights and rats and restraining orders and everything, and then there is lots of love again when she can benefit from them somehow.