She's not the type to lie about a UFO (UFO's aren't of any interest to her).
Whenever I have asked if she would discuss it or even consider regressive hypnosis, she says she doesn't want to talk about it. Of course, to me that is a red flag that she might have been abducted or, at the very least, might be suppressing something.
When I have asked her what she thought it was, she always says, "I don't know and I don't care."
“red flag that she might have been abducted”
The denial is a common attribute—many contactees are given telepathic instructions to forget what has happened to them—some more successful than others—may be a function of the skill of the alien as well as the resilience of the human.
Often we are not talking about classic abduction—it could be a telepathic message or a brief sighting of creatures.
One other comment on your friend who does not want to talk about it....
Many contactees are in denial at a given point in time in their life—often the alien judges they are not yet “ready” to deal with the experience.
At some future point (perhaps a trauma like a major accident or illness) the experience will become available to their memory—and may includes words of encouragement or even inspiration to get them through the tough times.
If their life goes smoothly then the information may not come to them until they are lying on their death-bed.
The point is that the information is for them and not for anyone else.