Shy

Audrey is so shy. She hardly talks when she's with people she's unfamiliar with. She's been in nursery with the same leaders for 15 months, and they told me she's just barely starting to say a few words. On Sunday, they weren't there. The subs told me she wouldn't say a word. She still needs time to warm up to my parents and my sister's family that live 30 minutes away. She's a spazz and little chatterbox here at home. So, I know she has it in her. Does anyone have any tricks to help her confidence other than to just give her time?