I think an eval might be helpful to you - 26 months is not too young. You'll use whatever early intervention service is in your area. At the least, you will get some relief for your worries. Plenty of typically developing kids don't get pronouns right until closer to three. Some of what you describe might point to a mild auditory processing disorder, though, and so it would make sense to help her with this.
Most people will say an evaluation can't hurt. I don't believe that's always true - there are so many unanswerable questions about kids, and yet I've found there are way too many practitioners out there who will jump to conclusions or treat children like problems to solve or try to squeeze children into molds that will make them feel more in control. Because of this, try to educate yourself as much as you can before moving forward with an evaluation, especially with the schools.
Most people will say an evaluation can't hurt. I don't believe that's always true - there are so many unanswerable questions about kids, and yet I've found there are way too many practitioners out there who will jump to conclusions or treat children like problems to solve or try to squeeze children into molds that will make them feel more in control. Because of this, try to educate yourself as much as you can before moving forward with an evaluation, especially with the schools.