Can deaf people speak

How do deaf people speak?

Yann is eleven years old and hard of hearing. His sister Xenja is 14 and deaf. Her mother, Marion, is also deaf. Thus, German sign language is the mother tongue for the two young people. You can find out what that means here:

How does the German Sign Language (DGS) work?
Xenja: Sign language works like spoken language. You need both hands and facial expressions at the same time.
Yann: You need the hands, the facial expressions and also the posture.

How did you learn it?
Xenja: I was “born” with sign language, just as you were with spoken language.
Yann: I learned it just as you learned spoken language.

How do you talk to classmates who do not speak sign language?
Xenja: There are many options: I speak in spoken language. The classmates learn sign language. Half of my class has been able to sign since I was in class. If they do not understand me when I speak or I do not understand them when reading from the mouth, we will communicate in writing.
Yann: I can speak in spoken language. I try to read my mouth when someone is talking to me. If the verbal communication doesn't work, we'll do it in writing.

Is there a sign that you particularly like to use? What does she look like?
Xenja: I don't know ... And do you have a favorite word of your own?
Yann: V-Hand, that means "Peace" and ILY-Hand (see illustration), that means "I LOVE YOU" or "I LIKE YOU".

Is there anything else that non-sign speakers absolutely need to know about your mother tongue?
Xenja: It is important that DGS is not an ape sign, but an independent language!
Yann: DGS is recognized as a language. It is a language in its own right.