I’m not going to pretend to know what she’s thinking, but normally when a girl starts making her plans on her own/telling you she won’t force you to be apart of it it’s just because she needs to start thinking about those things and you’ve made it clear you don’t want what she wants. It would be like preplanning a funeral or suggesting an elderly person write a will, it’s just stuff you have to do. She’s already 6 weeks in, it sounds like she’s not down with an abortion for whatever reason so she’s looking at what type of support single mothers have and how she can make it work. She’s counting you out because she doesn’t want to be the girl who trapped a guy, or forced a guy into fatherhood. Those women are given a lot of grief whether they deserve it or not and most women put a lot of effort into staying free of negative female stereotypes. Seriously, the effort we all put into not being that girl is ridiculous.
I know it’s easier to push her away by making her the selfish villain in this case but you will only end up shooting yourself in the foot with that kind of thinking.