Don’t worry, my son is exactly the same, and he’s just settled in the nursery. Although it takes the long time, but he has finally settled in and be very happy there now.
I don’t think you should take this shy and timid personality as a weakness, maybe your daughter feels comfortable this way by avoiding conflicts with other kids, but as long as she’s happy, just let her be, she doesn’t have to fight for toys with others if she chooses to give up. Some kids are aggressive, some are not, but either way it’s fine.
Children have their own way to protect themselves, so don’t worry I won’t try to change anything. She will develop dramatically when she’s growing up.
p.s Don’t encourage her to fight for toys with others, this is against her nature and if she does, it may damage her confidence and make her feel insecure. I think it is actually a very clever way not to do so.
Also, be prepared to take a long time for her to settle in the nursery.
Practically, it is NOT that easy to catch up with the English, your daughter may feel distressed because she doesn’t understand what others say. But it shouldn’t be a big problem. But be aware, although children learn lanaguage quickly, but it is NOT going to happen overnight.