Her father and "friends" try to negotiate deal with more than few clothing corporations last year, after radwanska sisters contract with polish sponsor expired but without help from any professional management company and got nothing. There is not a lot of details about all of this in polish press. Tenacious father runs it all but it seems like he is aiming for more than possible or she is not to hot of a marketing material outside of Poland. Her press skills and Savoir Vivre needs improvement. Hopefully friendship with other "polish" (Wozniak, Lisicki, Wozniacki " players will help and whole Radwaski Camp will move forward.
She is such a crafty player rarity in WTA nowadays.