To add on some information onto this.
I believe that your account in some cases can be deleted, but it's certainly not from just being inactive for a few months. If I'm not mistaken, I think that if your account is left untouched and not logged into for over a year it might clean out some things like characters. There's also been cases when accounts have ceased to exist due to the email people registered with has been removed by the email provider.
If you log on your FeralHeart at least once a year you should be fine as far as I know, but also the email you used for the account could be handy to keep in mind.
