I thought that was a great ending.
I felt really sad for Beryl making the decision to stay with the order. I can see why she did it, but I really felt for her having to come to terms with the fact that she had missed her opportunity.
I wish we could have seen more of Sister Julienne, but i read somewhere ( can't remember if here or reddit) that her husband irl died last year so she may have been limited in when she could film.
I loved Sister Catherine. She was a great late addition character. I wish we could have seen more for her.
Lastly, I loved the scene of them all seeing the ultrasound pictures. It is such a common technology now, we forgot how mind blowing it must have been to see it first being used.