A person is guilty of a Class 5 felony if, with the intent to coerce a pregnant mother to undergo an abortion against her will, the person threatens to commit, against the pregnant mother or any other person within the pregnant mother's presence:
A charge brought under this section may be commenced at any time prior to the time the victim attains age twenty-five or within seven years of the commission of the crime, whichever is longer.
SDCL 22-17-13.1