Since I'm not a Christian, you'll have to explain to me why we can now eat pork after Christ's crucifixion. Other than that, seems like it will work if my mom will actually listen to me this time.
The Bible, specifically the New Testament, although this is true of the Old Testament as well, emphasizes righteousness by faith. Very few people in Old Testament times understood this though; Abraham was one ("Abraham had faith, and it was creditted to him as righteousness"), Enoch (IIRC) was another, so was David (a "man after God's own heart").
4Christ is the end of the law so that there may be righteousness for everyone who believes.
1The law is only a shadow of the good things that are coming—not the realities themselves. For this reason it can never, by the same sacrifices repeated endlessly year after year, make perfect those who draw near to worship.
Specifically stated (emphasis added):
23For the wages of sin is death, but the free gift of God is eternal life in Christ Jesus our Lord.
Pretty much, it's saying that there is nothing we have to do to take it, nothing we can do to earn it. It is a gift; all we have to do is accept it. How do we accept it? The Bible says, time after time: faith.
Having a set of laws is pointless if you don't have faith. Now, the Bible doesn't say that it's okay to do out and do whatever you want. That's not the point.
Have her read the section out of her Bible starting at 1 Corinthians 10:23 that goes to chapter 11, called "The Believer's Freedom" (
here is a link to it online). It even says, "Eat anything sold in the meat market without raising questions of conscience."
Uh, for the record, the translation I'm using for all quotes unless otherwise stated is the New International Version (NIV). Rom 6:23 was taken from the New American Standard Bible (NASB). I'm not sure what the meaningful difference is (what sources, how it was done, etc).