Hi J.,
My husband and I have been reading a lot about child development, especially Joseph Chilton Pearce, a renowned expert and pioneer in child develoment. What he says about walking and talking will totally amaze you. He said that at this age (around one year) a child is focused on either walking or talking, but not both. They focus really intently on one, and then when they master it they move onto the other one. It sounds like your little girl has been focused on language, which is marvelous! Our one-year-old baby boy is the same. He is very expressive, way more than all the other kids in the baby gym. He laughs and says Hi to people in Trader Joe's. It's totally cute. And yet when we stand him up and hold him under his arms, he just sits right back down again. He's just not ready. So don't worry. Like everyone else said, children all have their own unique inborn development timetable, and your daughter is no exception.
I agree with the other suggestions about putting a toy out of reach, etc. You might even get on the floor with her and crawl WITH her...."look at mommy crawl!" We also used to put our hands on the back of our son's feet while he was learning to crawl so he had something to push off of. We didn't push him, he just pushed off of our hands.
The best shoes for a baby learning to walk are NONE. They use the gripping action of their toes to balance themselves, so shoes actually impede their progress, as does holding their arms over their heads (like we all used to do). The latter causes them to NOT develop their own balance.
Crawling is a critical stage of development, linnked to the balancing of the right and left hemispheres of the brain. So you don't want to skip it and go right to walking anyway. Just keep encouraging your little girl by playing and crawling with her, and clapping and getting very excited when she does crawl. And please stop worrying....because little ones have a way of "picking up on" our emotions and you dont' want her to think that there is something wrong with her. I'm sure she's a beautiful little girl...and you're a great mom. So just relax and enjoy each other's company. And her great language skills!
All the best,
D.
p.s. Have you asked your doctor about it at your well-baby check-ups?