As a parent, I find it harmful to compare my children to each other. They each have their way of living their lives that is completely different from their other siblings and it should not be used against them.
Our eldest is a very rules-oriented child. I know that if she’s given a task to complete, it will be completed immediately, efficiently and correctly. She gets impatient with things that aren’t done according to her standards and has burned a few bridges with roommates. She likes and lives by her rules. I can’t compare her to my other two.
Our middle child was always our 60s child. When she was in elementary school, we had to make sure we left the house 45 minutes earlier to walk to school. (The school was a distance of 10 minutes- so, the eldest left with a neighbor every morning). The middle child was so busy looking at flowers, birds, colors, etc. and appeared to be completely unaware that she was on her way to school. Rules and timelines just didn’t work for her.
Our youngest was/is quiet, efficient, and always wanted to be happy. He’s very methodical and is always trying to please his family and friends. This is a child who raced home, after school, because he had given his lunch to another child who didn’t have a lunch, so we had to pack him two lunches every day. He always received sports and academic awards for being kind, well liked and respected. He wanted to go to schools where he could be a help.
These personalities have stayed with them and all three receive and do things in their own manner. Each child has been successful because they learned how to work within their own system and we learned we couldn’t force anything differently.
The point is, each child cannot be compared. You’ve set up your elder daughter as the “goddess”, and the example, to which you want your younger child to aspire to, and that’s not going to happen. If anything you’re building resentment and that’s not fair to you and your children.
As parents, of “adult” children, we can’t control every minute of what happens once they leave our home. What we do hope is that the example we have set, in our daily routines, is some thing that they will use to judge right and wrong.
If our middle child had been asked, or limited, to our choices for colleges, there is no way we would have seen her thrive. The limits, that we gave to all three, were that they had to stay within the college budget.
Also, from my personal experience, the people who choose speech and language pathology, as a major, are really driven. This is a tough major because it requires lots of research and reading - daily, @thumper1 can attest to that. You make friends immediately because you have to work together to capture all of the information for this major. In other words, for this major, you have to hit the ground running. She will be extremely busy just trying to keep up with the workload.
I have to agree that you need to loosen the leash a little. If you give her an inch, she may take a mile, but she will ultimately have to take responsibility for her adult actions. Did she get the 18-year-old “adult” speech? The scary “whatever you do, over the age of 18, cannot be fixed by anyone but you?” It hits them with a dose of reality. Our high school offered it to kids and whatever parent wanted to listen to it.