should we dislike Mayella for lying about Tom Robertson raping her

In the book To Kill A Mockingbird when Mayella gives her testimony about how Tom raped her you can see     a lot of flaws with her story though because she changes it a lot. We all know that Mayella's dad is the one that beats her and that if she does not blame Tom her dad will hurt her. The Question is should we feel bad for her or not, I do not feel bad for her she is trying to get a Innocent man killed. She could handle this in a way better way.  Her dad is beating her she can say something about that but is to scared to lose her dad she might not know what to do without him. Even with that Mayella should do the right thing or atleast not try to get Tom killed for something he did not do.