I want to clarify this one, some of us like me I refuse to allow my hearing kids who can interpret for me. It's not their job. If they take over and they feel like doing it without me asking them. Its ok since its them who decide to.
I want you to know that any Deaf parents force kids to interpret for them are plain wrong.
This is exactly why CODA-parent relationships interests me so much.
I grew up interpreting and translating for my own parents. (Not ASL <-> English but Korean to English...) Everything starting from having to ask the airport bagging man where my parents could pick up their bags to making doctors appointments and writing transcripts of disputes my parents had with other people... since I was a kid/teenager at the time I was just eager to help my parents, but now that I look back at it, I don't feel very happy about my own childhood.
It's only from getting interested in ASL, and then in learning about CODA experiences that I finally figured out that what I felt toward my parents was resentment that they couldn't be the kind of caregiver and protector that I needed as a kid to feel cared for and secure.
I really commend the CODA parents who are able to be the strong, in-control, and protective parents that their children need to thrive, even if it means having to put in more effort than other people have to put in.
Being stuck in a situation where one proves his or her love towards a parent through interpreting or translating (working!) is no way to grow up. It's terrible, because it makes it seem like a parent's love and support is something that depends on the kid's ability to help the perent... Kids really need to know that their parents care and love is not conditional and that even if they can't help their parents that it is not the end of the world.
I guess, in that sense, I do hope that the girlfriend is not interpreting because she thinks interpreting for the guy will make him like her more than some other girl. I don't think a relationship should be like that.
She should only interpret because she wants to, not because she thinks the guy wants her to interpret for him; or because she thinks he is only with her because she is a good interpreter for him.