One of the challenges for late teens is that they may know a lot of stuff, but don’t know much about real life. They have the kit & capacity to do amazing things, but not yet enough sound judgement so they can really fuck up.
It can be hard enough to have what needs to be an adult-to-adult conversation about the practical realities of life choices when equal partners have conflicting or opposing positions, let alone if one person is not experienced enough to have seasoned foresight about the consequences of adult choices.
Your DD is gaming her future - as she juggles her virtual & fantasy perspectives - & little of what she requires & needs to have a baby/parent is in reality not tangible or in place. This cannot be an easy time for her either, has she got a counsellor at school, youth service or someone at the GP she can talk to?
Some young women do have babies in their teens & make it through tertiary education etc, usually with a huge amount of support from mum, family/friends, LA/College resources. Rarely does the story makes the headlines of the young mum who flounders with the everyday challenges of motherhood, unfulfilled potential & socio-economic disadvantage - because it happens too often to be an exceptional story.
Times are harder than ever, housing lists & access to services are firmly shut unless there is dire need, & local authority resources are stretched way past thin. Your DD may be entitled to apply for support, but this does not mean that she will get it.
@penguinmoonwalker your DD has to make her own choices about completing her pregnancy, keeping the baby or adoption. Choices that women make everyday. We all know that making these decisions can be very tough, as the longer term consequences are significant for everyone involved. A sizeable proportion of women seeking abortion in the UK have completed their families & are fully aware of the impact that another baby will make.
I’d be more positive about your DD’s pregnancy if she were practical & experienced for her age, e.g.earned some part-time money alongside her studies, but from what you say your DD sounds oppositional, insecure, inexperienced & as you say naive. She may not yet recognise that a baby is an entirely separate person, with needs & wants of their own, & with this comes an absolute obligation to prioritise the child’s wellbeing & interests. That is her job as the parent, not yours.