Complex student finance question!

Hi my daughter is 18 and will be starting uni this September to study primary education. She has a 4 month old son and rents her own house with him and her partner. I’m assuming that when she applies for student finance, it will be based on her partners earnings (he works full time and she’s on maternity leave after previously working fulltime also) rather than mine and her dads, as she lives completely independent of us? Also, what year will student finance ask for income details of as if it’s 2023/2024 she will still have been living at home then in which case would be our income but that’s no applicable now? Will she have to declare her maternity pay and universal credit as her own source of income? She only gets uc due to being on smp. She will also be eligible for childcare support from student finance has her son will be going to nursery, can she apply for this straight away?
Sorry for all of the question, I just want it to go smoothly for her come March when applications open.
Thank you in advance for any advice 😊