She always worries excessively about her children.
Tips
mistakes
Don't confuse 过虑 (guòlǜ, to overworry) with the homophone 过滤 (guòlǜ, to filter). Different second character — 虑 (worry/consider) vs 滤 (water radical, to filter liquids). Spell-check apps often flag the wrong one.
usage
Often used in reassurance: 你过虑了 ('you're overthinking it'). Synonym 多虑 (duōlǜ) overlaps almost completely; 多虑了 is slightly more polite/literary.