Read your Bible. You will find very few instances were angels help people directly. The kind of angelic help normally on offer is the destruction of somebody's enemies: as in 'the angel of the lord smote...'.
Nor will you find any reference to a female angel anywhere in the Bible. There are none. What you will find is angels with legs like 'pillars of fire' - does this sound very feminine to you?
The idea of female angels is actually a rip-off from pagan iconography - when you see such in Old Master paintings for instance - you are really looking at Virgo: the archetype for all the goddesses going right back to Inanna the wife of Anu. Inanna was first worshiped 6000 years ago.