A tilly
A Tilly is super pretty and smart, but she's also a bit self-conscious. She'll worry about what people think of her, but she'll still be there for you when you need her most.
Tilly: I wore this dress for three hours. What if I look stupid?
Tilly: I'm worried about the test tomorrow. But I'll still help you.
Tilly: I'm nervous about the presentation. But I'll still do it.