What should I get my friends mom for her 50th birthday?

My friends mom invited me to her birthday celebration on Monday. I think she’s having a cookout. I’m not extremely close to the mother but I am close with her son (we became best friends about a year ago). She’s turning 50, she’s Hispanic, she works at a school as a custodian, she’s short, a mother of 4, she sometimes wears makeup, and she also workouts every once in a while. That’s about all I know about her. But I think any good gift for older women would work.