Puberty at nearly 8yrs old?

Hi everyone,
I’m in need of serious guidance. My daughter grade 2, turning 8 in early January 2021 is experiencing what I think is hormonal changes and I believe she’s very close to getting her period. For over a year now she has had actual BO, pimples on her chin and forehead and sometimes bum cheeks. She has shown me light hair on her pubic region. Her dad and I have been divorced for 3 years now and I agree and have acknowledged she is starting puberty. She cane to me with questions so I explained a lot. We have 50/50 care. She has since told me her said told her it’s not that. So this especially the last 4 days she’s been very emotional. Over no real reason. Constantly telling me loves me and wanting to hug me. She’s been very cranky for no reason also, just sitting on the couch at my partner house and not involving herself in normal kid activities. Her sister is 5, step sisters are also 7 and 5. She told me today in the car she was so angry and didn’t know why and then cried. It really sounds like she is going through a hormonal change. Honesty ladies what do I do? She’s my first baby and she has always been big for her age. Gets mistaken for a 10 year old at the moment she is so tall. I’m tall and her dad is also. Is it what I think it is? Tia