<human>: Can you succinctly summarize the text in 1-3 sentences?

Have any of you guys experienced something like this? 

It started the day before yesterday, my daughter won't open her right hand for anything. At first we thought she might've hurt her hand somehow, but we opened her hand and there was nothing there. Then we thought she might have broke a bone or something, so I squeezed her hand without her noticing and she didn't complain or anything.

When we ask her about it, she says that the knife made a booboo on her, even though when we check while she is sleeping there are no cuts or punctures. Now she spends all day with her right hand in her pocket, if we try to take it out to take a look at it, she screams hysterically, as if we are killing her. 

We're not sure if it is related, but a couple of days ago, my wife stabbed her hand accidentally with a knife, and almost passed out, I ran to help her, and my daughter watched the whole thing. After that, my daughter wouldn't go anywhere near her mom's hand, she was so disgusted by it, even though the wound was covered by bandages.

Should I be worried? I'm afraid she might have some psychological damage of some sort.
<bot>: Toddler watched mom stab herself in the hand accidentally with a knife, and a couple of days later, she thinks her hand is hurt and won't look at it, hiding it in her pocket all day.