If it is an issue, it should come out at the trial.
As far as CA saying anything to LP, I do remember seeing her going in and out of that RV several times while it was parked in front of the A's home and CA.....??....well, we know she seems to have a problem with knowing when to shut her mouth....(like her daughter, tends to give too much detail even though it was not asked for) so who knows, maybe the dropped that little tidbit to LP thinking it was going to be able to serve as a cover if need be at a later date. Need to remember LP was there to find the baby within a week, so he was asking questions. What I'm pondering in my mind, if the purchase was made on the 27th, KC still had CA's card in her possession therefore it was KC's purchase, not CA's. If she did in fact, purchase 2 crosses and put one w/Caylee...It was to make herself feel better about what she had done. IMO only, of course.