Is she become pregnent by suck the peni....? Or that liquid goes in har stmach or in har mouth....?

there is no way to get pregnant by oral sex. end of story

Well, that's a bit simplistic and rather dismissive! However I admit the question is rather strained.
If the question is "Can ejaculate that she swallows cause her to become pregnant?" Then the answer is 'No'. However quite often there is more to the story than that. Hands are often involved, and semen on hands can easily be transferred to the vulva, and thence into the vagina.