Board Thread:General Discussion/@comment-11469381-20140515010109/@comment-24204226-20140622035035

It was definitely a jealousy issue. Then, after Shredder and Splinter had their falling out, mostly due to pride, (remember in Turtle Temper when Splinter told Raph that he let Shredder anger him, turned his words into weapons, and let a rivalry fester into hatred?) I think jealousy became obsession. Shredder clearly wanted what wasn't his and he fought Splinter over it. The unfortunate result was Tang Shen's demise. However, he went a step further and stole what wasn't his, raised Splinter's daughter as his own, and fed her lie after lie her entire life. That doesn't exactly sound like he cares about her. He just doesn't want Splinter to have her.