Oh bullshit. (sorry if that sounds a bit too confrontational, but this is a huge pet peeve of mine.)
Love doesn't conquer all. Just because her love isn't overcoming her fear of change, doesn't mean she didn't love him. This idea that love is all you need, and if a relationship failed, its because they didn't LOVE each other enough is silly and insulting.
What she doesn't want isn't being with Angus, what she doesn't want is her life to change. She doesn't want to think about one day leaving the comfortable bubble she has built for herself.
She isn't brooding because she thinks that she should have sacrificed for him because he is a good guy, she wasn't lying to herself. She did love him, and their wants in life just grew in different directions. And she is entirely aware that her want in life is stagnation and never moving forward with any real goals, or even moving forward at all, but stubbornly maintaining her current position, not because it makes her especially happy (hey, there is nothing wrong with someone who goes with the flow if that is what they want to do in life), but because she is AFRAID of change, and this is making her have to face that. She doesn't WANT to face change.