There doesn't seem to be further context other than the implication that the recruiter hasn't given up on her yet. It's not even clear whether her sync rate is really that low or the device is just showing incorrect readings after she broke it.

Frawnkenstein said:

It's not even clear whether her sync rate is really that low or the device is just showing incorrect readings after she broke it.

I have a feeling she wasnt compatible to begin with. Since Zuikaku is a bit Tsun. But he probably kept going back to her, perhaps with a hunch.

BitRefresh said:

I have a feeling she wasnt compatible to begin with. Since Zuikaku is a bit Tsun. But he probably kept going back to her, perhaps with a hunch.

Or that was the first visit and the girl that becomes Zuikaku wanted to become a shipgirl.