There are many lovely names you could give a female white cat with orange markings! Here are a few suggestions, categorized by theme:
Classic and Elegant:
Marmalade
Ginger
Apricot
Honey
Amber
Cinnamon
Playful and Whimsical:
Sunny
Ember
Spark
Flame
Peaches
Clementine
Unique and Creative:
Calico (even though she's not a calico, it's a fun name)
Tangerine
Coral
Sunrise
Solstice
Mango
Names Based on Her Personality:
If she's playful and energetic: Zoom, Scamp, Pixie
If she's cuddly and sweet: Angel, Snowdrop, Lily
If she's a bit sassy: Queen, Duchess, Diva
Ultimately, the best name for your cat is one that you love and that suits her personality! I hope these suggestions inspire you!