Hey Tor, I know how crappy it feels to find yourself becoming less relevant to someone who is important to you. You go from being what felt like a higher priority in someone's life to being someone they just try to fit into their schedule when they get a chance. Sadly, that's what often happens when people's lives change and they start to prioritize other life stuff. Of course you know this, that's just the way life works, but that doesn't mean it still doesn't hurt and it doesn't make us feel so good about ourselves either. I mean it is essentially a type of loss.
But I also agree with what
@AnonNK says above. As she adjusts to the demands of her new job, she may just need some time to come up with a new work-life balance where she still can make some quality time for you too. Give it some time maybe and see how it unfolds.