For all of the talk of KC's friends indicating she was a good mom (and none of them are that credible to me, in that they were not moms themselves and may have had lower expectations based on their own experience of NOT having to constantly watch a toddler), we also have another unbiased witness to KC's lack of attention to her own child.
The girl that came over to AL's with her boyfriend and sat in the living room (while AL and KC were in his bedroom) and noticed that Caylee was out on the balcony alone. In fact, RG's insistence that she finally get a babysitter because he couldn't work at home and also watch Caylee (and I assume it was the typical situation in which KC was either there not watching the baby or said she had to "work") also leads me to believe that she was the type of mom who, when she needed to show off or prove something, she could be perceived as attentive, but when she had better things to do, or was not in the mood, she basically ignored Caylee.