Kate Middleton's visit to the hospital where she had cancer treatment left an impression on Angela Terry, who tells PEOPLE what it was like to meet Princess Kate.

Kate Middleton—who recently announced she's in remission after finishing cancer treatments—flew under the radar as she did some shopping at London's Notting Hill neighborhood. See a photo.

In the years since she was first introduced to the study, she was diagnosed with an unspecified type of cancer and underwent treatment, but she didn't let that stop her from running similar trials in the U.K., and now, after much success, the trial is expanding.

Kate Middleton recently filled the public in on her schedule following news that her cancer is officially in remission. According to People, the beloved mother-of-three is "gradually" returning to royal duties,

The Princess of Wales has joined forces with health workers who support parents and babies to launch her initiative