That is not a big concern in relation to the position of the warts.
I guess I should have been more specific. I'm wondering if it is a concern that she has identical warts in the exact same spot on both of her thumbs - symmetrical.
Warts are curious creatures.
Some of them will disappear after being soaking in a concentrated solution of aspirin.
Crush some fresh inexpensive aspirin tablets in water and soak the thumbs.
Warts/Verrucae are cause by HPV and its not normal. Get treatment for it.
If they are warts cut a small piece of duct tape to cover the entire wart and leave it on if it gets wet then replace it the wart will die from no air being allowed to enter this will take some time to complete this will work! the above suggestion about freezing it off will work but sometimes
it will reoccur. Try the duct tape and repost on the results.
Warts are very contagious and are usually more frequent on the foot,you can also get genital warts.you are best to get them frozen off before they do spread anywhere else on your daughter body.