For the past year or so, she's been very rude to me and has been lying. Her tone of voice is very rude, she'll ignore me when I talk to her or ask a question, and she'll lie about insignificant things.

Its called puberty. Her body and body hormones and chemiclas are probably starting to change.

I was told by my sons therapist puberty starts now sometimes as young as 8 years old. It starts with hormonal and chemical changes in the body that make the child irritable and the go through lots of mood switching. one day they are happy and easy to get along with the next everything is a battle and the battles grow sometimes until the child turns 18 and moves out on their own.

Talk with your child or get her into therapy so that she has someone to talk to about what is going on.

and in my opinion telling a child that lying cuts the ties with those we love would be telling a child if you lie I will not love you, and something is wrong with you so I can't love you anymore.

so maybe she is telling lies because she thinks you don't love her anymore so why bother telling the truth now anyway.

Suggestion instead of saying - "telling lies cuts the ties of those we love" how about just saying that with everything we do there are consequences and rewards. good choices gets rewards and making bad choices gets cosequences. When we do our jobs we get promoted, more money, we don't do our work we get fired and no money. When we tell the truth we get rewards of being believed, and trusted, people have a hard time believing and trusting someone who tells lies. then the person has to work real hard to gain back other peoples trust and belief.

that way she knows there are rewards and consequences in life and if she chooses to lie then to expect to have to earn back that trust you have for her. and she won't see telling lies as loosing your unconditional love that is supposed to be there in a child - parent relationship. She also won't grow up thinking something is wrong with her because she told lies as a kid.

hang in there