My toddler did not take well to having a little brother. She'd never hit before; after he was born, it became a constant struggle. But a month in, I thought we'd made remarkable progress. She was "making nice" more often, kissing him maybe a little too aggressively, but it was better than downright abuse. 

Now it's two months later and I'm wishing I hadn't been so quick to congratulate myself. She's still hitting and my husband and I are at our wits' ends.

As per my disciplinarian brother-in-law, we've tried saying no very firmly and with a strict demeanor. She just finds that funny.

We've tried sticking her in her crib for a few minutes. Sometimes she just hangs out in there, seemingly undisturbed. Other times, she'll cry or scream to be taken out. We make it very clear that she was put in there because she was hitting and when we ask "are you allowed to hit?" she says no. But that doesn't stop her from doing it again.

We make sure she's gets plenty of attention. We try to model good behavior. Nothing seems to work.

And it's not only at home. Her day care teachers here at Kars4kids say they've noticed a new agressiveness to her too.

So what do we do?! Please share your advice in the comments below. I'll let you know if your ideas work!