Maybe she did ask to be kept informed?
Maybe she has been enquiring regularly about the progress of the investigation, although, like anyone, she could not be seen to interfere with it?
Maybe she did not feel the need to inform the British press or public if she had done both of the above?
It’s not in anyone’s interest in the UK to know is it? What do you expect Meghan to do? Wear a sandwich board and parade down the main streets of Manilla, or trust the word of the authorities when they say they are investigating?
She could also have been advised by the RF to leave well alone?
Especially being tangentially linked to the RF, imagine the headlines if she was thought to be meddling? “Meghan caught using royal influence to influence police investigation”?
Of course she would want to know if her father was guilty or not,, but like anyone else, that depends on the police putting together a good enough case with good enough evidence to convince a judge or a jury. As we know with sex crimes, all of the pieces of the process don’t always hang together even when someone is guilty.
And even if a case was pursued and prosecuted, Meghan would presumably find out about the verdict at the same time as other ordinary members of the public?