Do you think she can hear me after she passed away

This is a very good question. I personally, believe in spirits and/or ghosts. I do not believe that everyone can be heard or hear you. Anyway, there are many TV shows about the spirits, and many other areas that talk about it. She might be able to hear you, and might not. Good question. I have seen "white flashes" at night in a house, and others have seen it, too. Who knows.

I believe they can hear you,
I don't believe you have to do magic or a trance or have special people to talk with them,
You just talk and they may be aware of it.

I don't believe they can come back and talk to you

Like my friend Fr Chuck says , I think and hope they can hear us.

I know when my grandparents passed I would like nothing more than to be able to tell them how much I love and miss them because I didn't tell them enough how much I loved them when they were here.

I wish you well