Summer is here, so she went to get her armpit hair removed.
Tips
memory
腋 (yè) = armpit, 毛 (máo) = hair/fur — same 毛 as in 头发 vs 毛 (head hair vs body hair). Compound is purely literal: "armpit hair." Colloquially you may also hear 胳肢窝的毛 (gēzhīwō de máo).