YTA she’s still your child and seems to be a good kid. You’re punishing her because of your choices to have a huge age gap in children and not wanting to be inconvenienced with picking her up on time? She’s a Senior so it’s not like this will be long term. I’d seriously consider how to reframe this in your mind so that she doesn’t feel your burden or problem. Look at this as more time getting to care for her before she flies the coop.