Hajj & Umrah

Old lady going for umrah during iddat

Q: My grandmother has an umrah trip planned for end of March. But her husband passed away a few days ago (Feb 11). I am aware that iddat is for 4 months ten days but my grandma is 75 years old and I wanted to know if she is able to go to umrah and complete the remainder of her iddat when she gets back or is it not permissible for her to go? I was not aware if age makes a difference.