M.P.
After reading your post in the answer space, I remembered that my 3 yo always needs her mom or dad after she wakes up. She cries. She also cries a couple of times during the day when she's frustrated. Sometimes, when there's too much going on.
At 19 months, your grandaughter is unable to tell you how she's feeling. She isn't able to know what is going on.
I'm glad her mom picks her up. Your grandaughter needs that reassurance.
What is your question?
Where does your grandaughter live.with? You or her mom. I'm also not clear about when she cries. She cries when her mom enters the room and also when she leaves the room..this sounds normal to me. Crying does not mean that she's.an unhappy child. As to her mom picking her up. That also is OK.
Baby is due in 3 weeks. How does that figure in comments about crying and being picked up?
I suggest that if child lives with Mom, Mom gets to do whatever she wants. If Mom isn't concerned about crying and chooses to pick the toddler up, I suggest you back off and let her do what she wants.
I'm a grandma and know how hard this can be. Once I was able to stop acting as if I had the right to step in, my daughter and I are getting along fine. I'm now a relaxed and happy being a part of their life.
So you have a choice. Not meddle in Mom's decisions so that you can be a happy grandma or continue to meddle and be miserable. This advice comes from experience.
Maybe I don't understand your post and am only guessing on what it means.