ignore them they are just hateful normies and tbh as long as you say the age is 18 or above there's nothing anyone can do to stop you from making them look as young as possible also you can tell she's clearly 18 or 19 so idk what the big deal is idk the MC's age but I'm sure it's about the same oh tbh if she's a ghost she might be older than she remembers herself being but since a ghost remembers how old they were and what they looked like when they died they tend to stay at that age