When I was a very young child 4-5, my family lived in an old farm house, to reach it you had to cross a creek, if it rained we were stranded. Of course there were wild animals mostly bobcats. My mom worked at the nursing home in a town over & wouldn't get home until midnight or a bit later. I was terrified of the bobcats & storms. When my mom would get home I would be sitting on my bed talking to an old woman. This woman would tell me everything was going to be ok & as long as I'm in her home nothing will hurt me, we also talked about other things as well. When my mom would come into the bedroom to check on me & my sister I would get upset cause she made her go away. My mom believed me & brought me to my dads mom & had me tell her what this lady looked like. My grandma recognized her as her husbands (my grandpa) grandmother & we were living in her home. Years passed & I grew up & forgot.
Years later I was pregnant with my first child, when I was around 3 months I had a dream of my moms dad who passed when I was 5yrs. Old (we were close) he came to me in my dream & told me I was having a healthy baby boy, I was so excited. A few months later I went for an ultrasound & sure enough a boy. Another month or two passes & I have another dream of my grandpa this time he's asking if I want to come with him? In my dream I'm able to think & talk the same as if I'm awake, I tell him I'm going to be a mom & can't leave with him. My grandpa said he understands & there's going to be some scary things but not to worry it will all work out & we'll be ok. I asked if I would see him again & he promised we would. When I went into labor I was 2 weeks past due, while I was in labor it was very long, 15hrs. Into it my blood pressure started dropping & I had an emergency C-section. We both turned of ok
Rest of what happened is in comments, please if you think you can help me keep reading!
I would recommend you try to meditate regularly, to help strengthen your abilities. Try to practice switching your focus to where you did when you spoke with ghosts in the past.
Sometimes people move on. Other times you may not have a visit for a while. Time is different for ghosts. Your mother may have found peace. If that is the case, she may be with you in a different way. That doesn't mean she or the others are gone. Sometimes lapses in experiences are normal.
I am sorry for your losses, and know a bit how you feel. Certainly know that you should trust your instincts. It's hard when the time comes, but all you can do is learn.
I wish you peace,
Nightingale