Is it possible she wasn't standing centrally (against a wall?) and they were both managing to get a teat but standing at the same side?
I'd be tempted to give them a colostrum feed anyway. Is she a first timer? I know from my own breast feeding that it can be eye poppingly painful and I wonder if it's like that for animals!
Our pygmy last year wasn't really interested in feeding, we would make her stand still and put the kid on, different sides each time. The kid would get milk if we did this but if left herself to do it herself, mum wasn't interested. We ended up bottle feeding, that's a commitment but it fitted in with me here all day, it does make the kids love you to bits though.
Interested to tell us how you get on, ours due May.