I Need a Sign

Very recently the lil' dude has been experiencing some frustrations with communication. It seems the darling chica has some things to say to the Dad or I. Her eyes plead with us to understand. She then has a meltdown and turns bright red. It's sorta traumatic. For me mostly.

She got 4 new teeth in about 10 days, the latest was Sunday. She would be happily playing on the floor with a book or Tupperware lid when she would abruptly sit on her tiny bum with a look of pure sadness on her face. She would then burst into tears. She would cram her fingers into her mouth and look at me like, "fix it, Mama. It hurts and I'm broken and you can fix me." But I can't- I don't know what she needs at times like that because she can't tell me.

So, Internetz friends, send Mama some good suggestions on ASL, or American Sign Language. It intrigues me that these littles can begin communicating before their little mouths can form or say words. Where should I begin?