How do muscles and bones get stronger? Through exercise! As long as you aren't constantly forcing your child to walk when she is not interested, she's not going to do herself any harm, and she will make herself stronger.
Virtually all babies are bowlegged at 6 months, regardless of whether they walk or not. Search "bowlegged babies" on the Internet if you need sources to cite. There are tons out there! They outgrow the bowleggedness as their legs get stronger. Walking might actually help things straighten out faster.
A decent pediatrician will answer your questions about your child without any trouble. If you don't get decent answers, it may be time to find a new pediatrician.
Babies aren't as fragile as many people think they are. Follow their lead and you're probably doing the right thing.
Your daughter sounds like a go-getter, so I hope you'll encourage that in her.
