why do girls talk so much !!!!

Omg !!! My 7 year old niece has moved in with me and she talks so so so much. I have two boys 9 and 7 and they talk 70% less. She needs to ask every single question and she keeps on asking why and I'm not used to talking a lot. I literally get tired of answering her questions. She is living with me for two years. Honestly how can I survive so much chatting ?? I hate talking so much