As someone mentioned above, the sponsorship all but guarantees her a shot on the USWNT at some point. Imo, some of the women on that team are only still there because of Nike sponsorship. But they are probably the one's who are most miffed/mystified by this deal---can you imagine if an unproven 13yr old gets a deal worth similar $$ as xyz (insert your Nike sponsored USWNT player other than highly paid Alex Morgan here). Not sure if she's still eligible as pro to play on the GNTs? In all objectivity, I didn't think she stood out on the GNTu15 last Fall. Good but similar to her teammates. Not "phenom"-level.
Greg norman was asked about Tiger Woods getting the big money when he was just starting. Some guys were jealous but he took it as if he gets X amount then i should get a little more too. IDK but a rising tide lifts all boats.
Maybe Nike will now start making some good quality soccer shoes for kids