First of all, congratulations! You photographed a very pretty young lady and created photos with beautiful light and colors. Bravo!
First photo. Post processing, lighten her face. It's one of the best in your set. If you selectively lighten her face, the photo will benefit greatly! Btw, the balloons add a nice color contrast and a fun element to the photo! I love this.
Second photo. The broken lamp detracts. You could do two things. The simpler one would be to remove the lamp and leave the post, and that would work. The more complicated would be to straighten the lamp itself. I'd also crop the photo a bit, cutting from the upper right corner of the photo down toward the left. Btw, on the fourth photo I mentioned the leaning is unattractive. In this photo, I think leaning back on the railing is perfect. She's casual, composed, and confident. Finally on this one, direct sunlight is really hard and harsh, especially on the face. Regardless, I still like it here, and I think you made it work with her. She's not squinting, so it's not detracting from the photo.
Third photo. As with the first one, this would benefit from lightening her face in post processing. She has the benefit of light that was softened with her hat. Just a bit of exposure increase on her face and maybe her left shoulder and arm would help. Also as with the first photo it's one of the best of your set. She's really pretty, and it is otherwise a lovely photo! She's very grown-up in this photo. You could even crop this to come in closer to her upper body, removing the hands. This could make for an even better photo.
Fourth photo. Leaning against the rail isn't very attractive. She appears off balance and as if she is using it for support. She could certainly have her hand on the rail, but as a casual place to put her hand rather than something for support.
Were this my daughter, I'd want the first three photos with the aforementioned changes. Very nice work!
I hope this helps! I always side on the judgement of the photographer, and my suggestions are no more than that, merely suggestions.