mother married to new Indian husband

My mother is a single mother who takes care of me, my daughter, her work is sweet even though my mother is pregnant, but one day there is a handsome man who likes my mother and my mother also likes him, finally they got married, my mother lives in a new house, but my mother's attention is always focused on my younger sibling, which makes me annoyed and I don't like it, so I just stay in my room.