I have cows that hide their calves....Once i see that they do this i mark it down in my records...Some of my cows will not bring their calves out for days..Makes it very hard to move my herds when i rotate. I have to leave the gates open for a day just so these cows can get their calves they've hidden.
When i see a calf tucked away, i usually just note where it is. Go up to them and sometimes they bolt and run blindly..Had it happen on accident a few times and no point in chasing them. I just let them go and figure the cow will call them back(could be a problem if your property is not very big). Sometimes, i've watched, the calf will go back where its mother told it to stay. Some are very obedient..
I've taken calves in to doctor for a few days. When i do this, i put the calf back exactly where i found it. If you take it to the cow, sometimes they wont recognize it...it cant be theirs, they have their calf hidden.
Watch and see if your cow goes back to it. I'm guessing she will....