Definitely following the doe code. My opinion doesnt count for much, but im thinking both could be bred unless that was a heat Angel just had. Was Mr. Buck interested at all?
A doe's ligaments will only loosen shortly (usually less than 24 hours) before kidding. If you are feeling something loose early on in pregnancy, you are not feeling the right spot.
Sounds to me like she's not bred, or she's at least not due for a month or two. It looks like what you saw was a heat related discharge.