calculating how dense an item is going to be inside a purse

a question for experts with math and logic application skills to help me make a proper choice for my mother overseas.

thanks-
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if putting this
http://www.amazon.com/gp/product/B00C95M44E
over
http://www.amazon.com/Samsung-GT-i8190-factory-Unlocked-International/dp/B00A29WCA0 

do you think it will be a right fit (both of the above together) inside
http://www.amazon.com/gp/product/B00BVU88QG

by right fit, i mean that the phone won't be too squished inside the purse, neither will be freely roaming and floating inside the purse, because there is too much empty space (if phone is the main item inside the purse)

if it won't be a fit, can you suggest what size purse should i be looking for? (phone and cover to remain and be the priority!)

thanks!