For how long have you tried the cows milk?
Has she had any other dairy products?
Great - if she can take other dairy products then I agree 100% with your own pediatrician.
If you are not keen on formula - then you could try goats milk.
However I suggest that you try and persevere with the cows milk.
Please get back to me if you would like to talk some more.
To be honest I would just give her plain old cows milk.
You do see some infants who just take time to adjust to the different " product."
Yes - you can certainly try her with eggs again.