It feels like you're trying to push her into a career she doesn't really want to be in. If I was you, I'd respect her wishes and instead support her while she finds something she's passionate about.
Let's be honest, writing enterprise Java is enough to kill anyone's passion. That stuff sucks your soul out until you make it to architect level (then you spend your time sucking other people's soul out).
She should find a job that interests her more (while lets be honest, work is called work because it's not fun). Then, if that job happens to be embedded programming, she get a raspberry pi and work with it for a while. After a couple months she should be more than proficient enough to find a job in embedded.
In any case look through job postings until she finds something interesting. Once again, work is generally not interesting.