"Anaa'izah" (عَنَائِزَہ) is an Arabic word whose meanings include "to be separate," "to be distant," and "to strike with a spear or knife." Given these meanings, the combined name "Anaa'izah Faatimah" (عَنَائِزَہ فاطمه) is not suitable. However, naming the child simply "Fatima" is perfectly fine.
Allah the Almighty knows best.
Darul Ifta Al-Ikhlas, Karachi.
القاموس الوحید: (ص: 1132، ط: ادارۃ اسلامیات)
عَنَزَ عنه: الگ ہونا، دور ہونا۔
عَنَزَ فلاناً: نیزہ یا چھری مارنا۔