I too believe she knows she's doing this, which makes it a million times worse. It's been pointed out to her so many times for her to not be aware. It's just so odd that someone can bond with one twin more than another (coming from a mum of twins)! If they were siblings you could perhaps understand as may have had a traumatic birth with one or something, but she's literally just taken a liking to one more than the other.
Really feel for Lawson. He seems like such a bright and beautiful little thing. Not only is her behaving this way detrimental to hers and Lawson's relationship, but she'll also drive a wedge between the twin boys too.
I think she definitely has a narcistic personality but I think there is some other personality or mental disorder there too. Just the way she once painted Lawson in a bad light, claiming he'd bullied Grayson while in the womb?!! Seems she has made this up, honestly believes it and then somehow that justifies her appauling behaviour. There's got to be something mentally wrong for a grown woman to try and snatch innocence from an innocent newborn baby like that.