Hi L.,
This hits me on a lot of personal levels, my mom does the same thing, except very opposite, she talks about how my 6 yr old is so perfect, and whatever she wants, she can have, right in front of my 4 yr. old. When I give her "the look" my moms says,"Oh yeah, you too." to my 4 yr. old. But not at all loving. My 4yr old will talk to her, and my mom will look right at me and say,"what is she talking about?" It breaks my heart. I just give my 4yr. lots of hugs and kisses, but I know she's probably wondering why Grandma is like that.
Then there is ME, I am so hard on my 6 yr. old because, I know she knows better, SHE knows right from wrong in a lot of cases, so I talk to her more maturely. But with my 4yr. old I still on some levels easier on her, because she's smaller. But I do find myself just being so stern with my oldest one all the time(you'll see my posting about it soon).
What I have been doing about this is, I tell my mom to stop doing those things and tell her it's not right, and she KNOWS its not, and she says she was just kidding, but she now knows it annoys me and she has stopped to some extent. ME? Well I am still working on it, I try to make extra efforts to just tell my oldest I love her and I am proud of her. Good luck, and I will be paying close attention to your replies, I just wanted to let you know you're not alone!
Thanks, D.