you know, even though i know khun plernpit unintentionally killed annie, and despite her previous wrong-doings towards annie and despite the fact that she wasn't all that good of a mother, i can't help but feel sorry for khun plernpit...she realized her mistakes and she truly does love both of her daughters...she's full of remorse and guilt...
as for the matter about how Rome and Rita's relationship got so cold in the last few episodes (with the exception of the happy ending), well, Rome acted coldly to Rita, but that's because he's hurt that she believed he was the killer...but Chomduen couldn't be blamed either...the way Rome acted was suspicious, and she wanted to confirm whether or not he really did kill Annie before she allowed herself get further involved with him...she didn't want to date a murderer afterall...