In Toy Story, Little Bo Peep mostly played a supporting role. Not much specific happened to her directly. She was there as part of the toy group and had her moments of interaction, but no standout events.
Bo Peep's story in Toy Story is quite interesting. She faced challenges and had to adapt. Eventually, she came back stronger and had a significant role in the later movies.
Well, it's not precisely given how old Bo Peep is. But if I had to guess, I'd say she could be around 8 or 9. The focus of the story isn't really on her age though.