My daughter is a size 1 on her regular street clothes she is 5 feet and weighs around 110 lbs what size should I order? Oh, do you ship in a nondiscript package? This is for christmas

Tech Specs:

Material:

[Shell] HyVent 2L (nylon); [Shell lining] mesh in body, taffeta in sleeves 

Insulation:

[Zip-in liner] 100g Heatseeker (synthetic) 

Waterproof Rating:

[Shell] 25psi 

Breathable Rating:

[Shell] 675g 

Core Venting:

[Shell] Underarm zips 

Pockets:

[Shell] 1 forearm with goggle cloth, 1 chest, 1 bicep cargo, 1 internal security, 1 internal goggle; [Liner] 2 hand, 1 internal 

Seam Taped:

[Shell] Yes, fully 

Powder Skirt:

Yes 

Hood:

Yes 

Zip-in Compatibility:

Yes, zip-out liner included 

Recommended Use:

Skiing 

Manufacturer Warranty:

Lifetime 

Country of Origin:

China