I don’t think she wasn’t prepared for royal life, she clearly wasn’t interested
Perhaps it could have been a bit of both, @FitatFifty?
Almost from the start I've never believed she had the least intention of sticking around, but that's no reason for others not to have tried to prepare her (though whether she'd have listened is anotther matter)
As for a meet up - which could well be just gossip or flag flying at most - I could understand weak Charles wanting to see his son, except that anything he went along with could affect William who's likely to be around a lot longer
Hopefully though it won't come to that, since if Meghan still wants Harry around she'll almost certainly scupper anything they try by leaking it