I don't think your grandma is being heartless in this situation I just think she doesn't know what to say so she's waiting for you to bring it up with her before she mentions it. I mean, someone really close to me got told about it by someone else but didn't talk to me about it until I spoke to her. You just have to mention it to her and she may have something interesting to say about it. If you don't want you don't have to but just an idea.
