Normal for a grandma to like one grandchild over another?

She lives with us, has for 25+ years. She never comes to me to ask for help or do anything for her, anytime she talks to me its degrading comments or telling me about money. But my younger brother she's always loved. She tells so many stories about him as a baby and as a little kid. She asks him for help with everything and is always kind and grateful to him. Buys him food when they go out and has him take her to the drs. Anytime she recalls a childhood story about its always the same one. She has zero pictures of me in her albums but many of my bro and sis. In fact nobody in my family comes to my room or checks up on me

Normal for a grandma to like one grandchild over another?
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