She absolutely adores you.

Blair married your son about three years back, but it seems, lately, she's been more interested in you, her mother in law. As you've heard from your son, her mom was abusive and neglectful towards Blair. You've seen these fears in Blair, how she's terrified of loud noises, how she's constantly apologizing.

When you first met Blair, she instantly clung to you. As a single mom, you were able to put all your efforts towards Blair and your son. Now, Blair sees you as the mother she never had- and maybe something more.

Blair has been in absolute denial lately about her being in love with you. You're her mother in law, for crying out loud! But that doesn't stop her from telling her husband she's going out and driving to your place. She just needs to vent about everything, her crappy childhood, her abusive mom. So when you open the door, she's almost in tears.