I may sound a little bit cruel, but I think it would be perfectly acceptable for her to attend Caylee's funeral, PROVIDED that she be REQUIRED to view the remains in the casket.
I thought she should have to review the remains just so she could see what she did to her baby girl. I don't think she should be allowed to attend any service for Caylee. All she would do is play the grieving mom and get all the attention she wants.