You're trying to 'solve' a problem of youth lying flat. Maybe go see how China / the rest of the world studies the topic of new generations disconnecting from society as a reference?

I think you're wrong for trying to approach the problem from your perspective rather than hers.

Maybe have a heart-to-heart talk with her on how she imagine her life is going to be in the future, what are her plans long term, etc.
Alot of the China youths going about laying flat are mostly depressed about their own future outlook, if I can summarize that from interviews.
They're stuck between the previous gen's expectations vs their own prospects of the future based on their own observation. Kinda like a midlife crisis before reaching midlife I guess.

I'm not saying be soft, but try to empathize. Maybe if she thinks some future goal is too high of an obstacle then set smaller personal goals first?

-Have a relative that recently quit because she's 'overwhelmed' due to kept bringing home work, my aunt could not understand it because
she worked a factory operator before so homework is an alien concept so she's not helping the situation either with her remarks.

Look at it from this perspective. Her lower pyramid needs are being met by living with your parents. As such, she's now challenged by things on the upper segment of the pyramid.

If your goal is only to force a change, you can either a) stop providing her lower pyramid needs or b) you can help explore her challenges in the upper pyramid.

Remember, people can be depressed at any stage of the pyramid. See Kurt Cobain / Anthony Bourdain. Since everyone struggles with different part of the pyramid at any given time, it can sometime be hard to relate.