Aww, I feel you lah, my first one was exactly like that jugak! A few of us mums tried playschool around that age, and honestly it varies so much depending on the child and the environment, tapi yang important is start small je, maybe just 2-3 hours a few times a week first so dia boleh adjust slowly without feeling overwhelmed. Some of my mum friends swear by schools yang have a really patient teacher-to-kid ratio and allow parents to stay nearby for the first few weeks, kasi confidence to the child, ada schools yang okay with that. Takut sama orang baru is totally normal at this age, so don't rush it, let her go at her own pace, and one day you'll realise she's chatting away with her teachers like you don't exist!