I need some advice my niece is very jealous at mother kids with me and I'm pregnant and I'm worried…

I need some advice my niece is very jealous at mother kids with me and I'm pregnant and I'm worried that she's going to be jealous of the baby and think that I don't love her the way I do before I had the baby but I want to show her that she's still important she's my love I love her will really really close and she loves me more than anybody her own mama will tell you that what should I do to make her feel better and not jealous