Early Girls are usually pretty mid-sized, about half the size of a tennis ball. But this year there is one, hiding behind the normally sized others, that will rival the beefsteaks when its ripe. And dadnabit, its going to ripen for the housesitter. Lucky gal!
The tomatoes are turning orangey red, the basil is finally growing. July 4th might be allowed to happen after all!
If it is showing any color at all, pull it and take it with you. Any windowsill will ripen it out.
Forget the housesitter. You will appreciate it more than she will, and gosh darn it, you grew the thing.