I like a girl, but her parents are both deaf-mute.

First of all, you need to eliminate the hidden dangers in her heart. In fact, she needs your protection very much. Her parents are both deaf and mute. You need to communicate with her more and let her feel that you are her relative!

Are you not confident? Surely that's not right? You are just worried about being rejected by her. If you really like her, then take good care of her. Don't be afraid of being rejected by her. All good things require hard work!