Many Christians lie, have lied and will lie again. So liars get into heaven? I mean, if you are going to do it again how sorry are you really?
And if you got an abortion and you would do it again, but you are sorry, does it matter that you don't get another abortion? The truth is if you had to do it over again you would get the abortion. Many many Christian women have gotten abortions and have asked for forgiveness but bfd after the fact. They knew what they were doing was wrong and did it anyways. So do they get a free pass?
Catholic teaching emphasizes that no one but God can know who, if anyone is in hell. God is Judge, and God judges what is truly in the human heart. This being said, let's get to your examples.
If someone is a continual liar, there has been no repentance--no turning away from the sin. Sorry doesn't count. Catholics are fond of saying, "God doesn't send people to hell--they choose to go there." If someone is a true deceiver, they will loathe an afterlife where deceit cannot exist. They may prefer an afterlife where they can continue to deceive--an afterlife completely apart from God who cannot be deceived.
Since abortion is taking a life, it automatically places one in danger of hell. Again, sorry is absolutely meaningless without repentance. Repentance is regretting the first abortion and never going through another abortion again, no matter what the circumstances. "I'll do what I want and ask for forgiveness later," is a broad, dangerous route to take. Jesus teaches the road to eternal life is narrow and few find it. Abortion kind of places a person on the broad road and perhaps makes it all the more unlikely that the narrow way will ever be found.
Keep in mind, Catholic teaching is not as much about the afterlife as it seems to be with Protestants. Catholic teaching is more about
eternal life than it is about the afterlife. Eternal life begins right here, right now as a way of living in this life which extends into the afterlife. Abortion and lies prevent one from living eternal life, because eternal life is defined as obedience to God--working to discern the will of God and to follow it. This life (eternal life) is the narrow way. I am not so concerned about how abortion, lies, and other great sins affect the afterlife, as how they affect one's eternal life. Sins come with consequences and most of the consequences happen in this life.