Forty years ago my cousins baby boy was bowlegged and he grew out of it. Back then most babies didn't walk until after they were a year old. He was walking at 8 months. The doctor said his bones were still mostly cartilege and when they hardened up they would be straight and they were.
Severly pigeon toed is something else, I think. I recommend that you have her evaluated. When is your next appointment? I wouldn't wait too long for the evaluation because her bones are maturing rapidly. If there needs to be a correction it will be easier the early you start.
I've seen babies legs in a brace to straighten out their feet. They were younger than a year old.
Later: Please have your daughter's doctor looke at your daughter's feet. Other posters have said that their child grew out of it. That is the positive outlook. But I've seen a couple who didn't grow out of it and they still have difficulty walking.
The being pigeon toed in the extreme has a greater possibility of a serious problem. Sometimes it is caused by misalignment in the hips. If this is the case your daughter will have significant difficulties throughout her life if it's not corrected before her bones harden.
I'm not wanting to scare you but I do want to reinforce for you that your daughter needs to be seen soon. Don't wait until her 1 year check up. Hopefully she will outgrow it but I wouldn't want to take a chance on it.