For a mom from an island, not aware much about this daily internet culture

She gets a complicated text message from one of her friends. Not knowing the meaning, she texts to her son, "Hey Son, what does IDK, LY, & TTYL mean?"

He texts back, "I Don't Know, Love You, & Talk To You Later."

She texts him back, "It's ok, don't worry about it. I'll ask your sister, love you too."