Yeah,the FF welcomed her,treated her like one of them and that is how she repays them?!

If she didn't felt like part of them,she could have just leave,without breaking hearts!

I understand that Sonic failed to save her in the past,but he didn't do it to hurt her: he simply didn't make it in time!

She should have been more mad to Robotnik than to Sonic!

Sonic cared for her!