[linkpuff]

I think something is amiss here, her brain doesn't get wiped once she gets out of the black site, she can remember your number even if she gets out of the base without a piece of paper containing it. Have you two met before she went to the black site? If not, this reeks of a romance scam

[logicallee]

You are suggesting she exfiltrate my phone number by memorizing it? I don't think that's allowed. I wouldn't do that if it were considered a data leak.

Can you suggest any other approaches that do not involve exfiltrating data from a secure site?

[linkpuff]

Yes, I am suggesting that. Unless you believe that one can't think about work duties while cooking dinner. Otherwise she would forget entirely about your person at home. But I want to tackle this from a more serious angle, have you researched common signals of romance scams? The black site excuse to not use a phone is very suitable for a guy pretending to be a woman so he doesn't need to get a phone number and a voice modifier (a poor job at either would lead to destroying the scam)

Plus... wouldn't a black site also not have mail?