[align=center][div style="width:60%;overflow:auto;font-family:verdana;font-size:11px;text-transform: lowercase;text-align:justify"]You get to determine how your character ages by your own discretion, though I don't believe your characters can control how they age without another power.
So if you want to age up your character, you can do so, so long as you don't say that your character did it quicker than usual without a power
liquid time assumes that the same amount of time has passed without having to physically wait it out - that would be aging regularly over a regular period of time, but "skipping over" it for the sake of still being able to play your character. liquid time acts like time skips, basically, so your character couldnt age rapidly up through liquid time with the intent of saying its intentional
amorphous and shapeshifting are both transitions from one body to another- theoretically persephone could shift from a child body to an adult body to be considered "growing up quickly" but we dont have a power that specifically allows control over a characters age
like tikki said we dont have rules on how someone can choose to age their character, but it has to be kept on a realistic scale in relation to the world if that makes sense? characters liquid timed up still have the same amount of time pass. it cant be done intentionally as rapid aging or with powers, though