The end was really rushed, I think they left a lot of character development to be made, with both Kagami and Indou.
At the end we got a happy ending, with some well awaited yuri kissing, right after the (almost always present in yuri stories) drama, but it's really clear they ran out of time, so much that the "mature" responses from Kagami and Indou feel forced; we couldn't explore the guilt felt by both mother and daughter, nor could Indou really grasp the situation.