5 quills isn't too many, really. Hedgehogs do regularly lose some quills, like we lose hair, so it's possible that it's normal quill loss. If you're still seeing quills come in, she isn't getting any bald patches & her skin looks good again, I wouldn't worry about it too much at this point.
It does sound like she might be a bit more nervous as far as hedgies go. I'm not sure it would be contributing to the quill loss though. They can quill in response to stress, but if I remember right, Nancy has said that it typically occurs after the stressful period. It sounds like you're doing well with her & not like she has any unnecessary stress in her life.