Hello~I did some research on it, it seems that your number is fine, each lab has different ranges for "normal and abnormal" but so far, most are saying anything above 45 for a woman your age is fine. I wouldn't worry about it at all.
Here is a site to look over an some info I copied from some other sites.
https://karenthrelkelnd.com/blog/optimal-dhea-levels-in-females.
For women, DHEA levels tend to peak during late adolescence, when the normal blood concentration ranges from 145 to 395 micrograms per deciliter. DHEA levels begin to naturally decline by the age of 30. While normal levels for women in their 20s fall between 65 and 380 µg/dL, for women in their 30s and 40s, the average normal range is 45 to 270 and 32 to 240 µg/dL, respectively. By the time women are in their 70s, their DHEA levels are roughly 20 percent of what they were at age 20.
DHEA level refers to the hormone concentration by volume in the bloodstream.
According to the National Institutes of Health, normal blood levels of DHEA depend on age, and within each age group there is a significant range.
The normal range of DHEAS differs according to age and gender. The following table provides a rough estimation of what is considered normal DHEAS level.
Age (years) Male Female
18-19 108 to 441 µg/dL or 2.92 to 11.91 µmol/L 145 to 395 µg/dL or 3.92 to 10.66 µmol/L
20-29 280 to 640 µg/dL or 7.56 to 17.28 µmol/L 65 to 380 µg/dL or 1.75 to 10.26 µmol/L
30-39 120 to 520 µg/dL or 3.24 to 14.04 µmol/L 45 to 270 µg/dL or 1.22 to 7.29 µmol/L
40-49 95 to 530 µg/dL or 2.56 to 14.31 µmol/L 32 to 240 µg/dL or 0.86 to 6.48 µmol/L
50-59 70 to 310 µg/dL or 1.89 to 8.37 µmol/L 26 to 200 µg/dL or 0.70 to 5.40 µmol/L
60-69 42 to 290 µg/dL or 1.13 to 7.83 µmol/L 13 to 130 µg/dL or 0.35 to 3.51 µmol/L
70 and above 28 to 175 µg/dL or 0.76 to 4.72 µmol/L 17 to 90 µg/dL or 0.46 to 2.43 µmol/L