Don't give her an address, idk how you would prevent this, but she might be abke to get someone to track your messages to an Ip address and figure out your location from there. Might be fearmongering on my part since it is smth I think about often, of someone doing that to me to torment me. But you said she is a high ranking military one, so she just might be able to do that.
As for how to convince her you are fine, here are some lies that she might believe depending on your lifestyle and personality
1. You had a panic/manic attack and are feeling fine now, no need to fuse over it.
2. You were at a party, and you think you accidentally consumed smth weird, but everything is okay now.
3. You got some drugs, had a really bad trip, and you won't do it again now that you know it fucks you up really badly
4. You had a bad day and need to vent, but you are recieving professional help currently and there's no need to worry.
5. You had an agrument with another friend, and was in a downward spiral where all of your problems seemed so much worse and you are fine now.
6. One of your friends cut ties with you and you wanted some attention, you're sorry that you lied about this and that you will not do it again.