EUSS Surinder Singh Paper application

Hi Everyone,

My mother was granted EUSS family permit from Ireland recently and I am planning to move to UK with her and apply for pre-settlement. I understand that I have to request paper form for that application once I am in UK. here are my questions.

- Do I need to send her original passport with paper application once I am in UK?
- Can I use her biometric card issued by Ireland to prove her identity?
- What documents I need to gather in UK in addition to documents provided with FP.
- Do we roughly know the timeframe for processing and return of the passport if I have to sent the passport?

thank you in advance.