While I recognize that the SA doesn't have to prove motive and understand that the possible motives below don't prove anything, it's what I had saved and thought it may be helpful/useful to others. I'm sure I missed a lot of other potential motives, but this is a rough draft list of what I had previously put together (for what it's worth)...
Possible Motives
Link:
http://www.orlandosentinel.com/news/local/orange/orl-casey-anthony-interviews,0,100606.htmlpage
ICA told Nathan (Tonys roommate) she didnt want Caylee to be at home with her parents due to the arguing didnt want Caylee in that environment.
CAs brother, Rick Plesea, told Yuri Melich ICA hated CA because Caylee liked CA more than her.
CAs brother, Rick Plesea, told Yuri Melich CA went to see a counselor about ICA and counselor recommended CA kick them out on the street. CA threatened ICA several times that she would do this and file for custody of Caylee.
Lee (ICAs brother) told Jesse Grund ICA left the house 6-15-08 due to a fight ICA had with CA where CA choked Casey.
ICA told Jesse Grund she didnt want to be like her mom wanted out of the house. Had love/hate relationship with CA. Angry because CA held Caylee first when she was born and CA called herself mommy in front of Casey.
Tony Lazarro told ICA he only wanted boys.
ICA told Jesse Grund she hated her dad because of all his gambling.
ICA told Jesse Grund she hated her mom
5-6-08 ICA texted NYItaliano (Anthony Rusciano) that her nanny was coming back from Tampa; the nannys sister was getting married, and asked Anthony if she (ICA) should bring the little snothead.
ICA told Annie Downing (childhood friend) she was angry at her mother at Caylees 2nd b-day party.
Annie: Caylee was, you know, opening her presents, and Cindy was doing a lot of the work for her and Casey got upset. We had discussion about it. You know, she was upset that Cindy was, you know, helping Caylee when it was Casey's daughter. Casey wanted to be the one helping. And did she say that was an issue between the two of them or a problem? I think that it's -- it was an ongoing battle with the two of them. http://www.forthepeople.com/Downing.pdf
ICA told Annie Downing she caught her mom signing her (ICAs) name to e-mails or a text or something --
http://www.forthepeople.com/Downing.pdf
ICA told Amy H. (friend) her mom was crazy. When Amy H. took CA to Tony L.s apartment to find ICA, Amy H. stated CA was very confrontational....angry.... massive explosion of mother and daughter.
Lee Anthony (Brother) testified ICA said she was a spiteful bytch.
FG: Did you ask your sister why won't you allow us to see Caylee - what did you tell Det. Edwards she said?
LA: I told him she said "because maybe I'm a spiteful bytch"
Lee Anthony:
She (ICA) told me that my mother had numerous times thrown it in her face in my sister's face that Casey was an unfit mother for Caylee - and that Casey says maybe I am.... and I went on to say that my mother had also referenced Caylee as being a mistake, but the great mistake or best mistake Casey has ever made.
Christine (friend) speaks on the phone with ICA. (ICAs call from jail to home).
Casey - No they're not. Because I just watched the news and heard everything that my mom said. Nobody, in my own family, is on my side - They just want Caylee back. That's all they're worried about now. Is getting Caylee back.
ICA's Grandmother (Shirley) stated Caylee hated her mother more than she loved Caylee.
ICA's jailhouse visit with her parents where she takes her hissy fit - angry at her mother for never allowing ICA to talk, etc. etc. etc.