I'm glad the talk went well! Having feelings out in the open can help a lot.

Can you tell what her feelings are on her relationship with her boyfriend (positive, negative, ambivalent)? Even if she loves her boyfriend, that doesn't mean the relationship itself is going well, necessarily. It sounds like she's in a difficult place right now, and she may even not be sure about how she feels or what she wants from you. The best you can probably do I think is be supportive of her, but if you feel like you need/want to pull back for any reason, allow yourself to do that.