Is it normal to be jealous of your sister-in-law?
Mostly.Normal for most people
Yes, it’s normal to feel jealous of your sister-in-law sometimes. Family comparisons and shifts in attention can bring up complicated feelings, even when you care about her.
Jealousy can pop up if she gets more attention, seems closer to your family, or has something you wish you had. You don’t have to be proud of the feeling for it to be human; lots of people have a flash of comparison or resentment in family relationships.
What matters is how you handle it. Try to notice what the jealousy is pointing to—maybe you want more appreciation, closeness, or fairness—without taking it out on her or turning it into a competition. If there’s a specific pattern causing tension, talking calmly with the person involved may help.