DD was in a very similar situation a year ago… narrowed ED down to 4 schools - probably all had lower ED odds for her than you noted for your daughter. Overall acceptance rates less than 20% at all of them. Stellar academic record, solid (but not spectacular) ECs, essays and recommendations. I was very concerned that she was going to fall into some never never land where she wasn’t quite what the top schools were looking for and the next tier down schools thought they were her safety school and wouldn’t admit to protect their yield.
She is legacy at one of the schools and could see herself at any of the four - they each had their plusses and minuses. We discouraged her from putting all of her emotional eggs in one basket. We did encourage her to apply to a school ED as we all thought it would give her a leg up. One of the schools had ED 2 so that was moved to the “if I don’t get into the first one” pile. And then she narrowed it down to just one.
She also applied to three schools EA - two big state schools (one in state) and one private. She received her EA admittance to the in state school a few hours before the ED decision came out. She was admitted! (She was admitted to the second state school later that evening and had to withdraw her application from the EA private school.)
We were all so happy that the process was done by mid December! And she knew where she would be going in the fall. No additional decisions to make.
I definitely encourage ED if there appears to be an admissions advantage and if you can live with the estimated financial aid / net price calculator results.
Good luck to your daughter!