Did she get colostrum?
Twins can be profitable - but - I HATE TWINS. Too many things can go wrong. Tangled up needing assistance, parturition too early, retained placenta, cow is thinner at calving, harder to get her bred back, etc.
I have had a good share of twins (Simmental tend to have more twins than other breeds). I have to say, most have been good results, but if I never have another set, it would not break my heart. I have one old girl that has had 4 sets. Spit all out on her own, all but 1 was alive & well. She raised them all. She is 13 and is raising her 15th calf. Stays fat as a pig - even having back to back sets of twins that she raised.
We had a streak a while back of 7 years in a row with a set of twins in our 30-35 cow heard. All but one survived. It is draining on the momma though, but one cow had two of the sets and raised all hers with no problem.
I get a lot of twins. Standard procedure now it to pull one as soon as it's had it's colostrum and start it on the bottle. If it's not got a new momma in a few days it gets sold for cash. Very few cows will take a set of twins out onto the range and come back with both. Most cows will raise a set if they are kept on smaller tame pastures but that's not an option here if I want the cow to be exposed to a bull.
Yes, Silver - your program is totally different. Yes, my cows raise their calf on grass, no grain. But, they are moved every 3-5 days rotational grazing and I see them daily - AND, we don't have wolves & bears attacking them!!!!
I just wanted to make it clear that there is always that good momma cow that can handle twins - but, on average, they are a pain in the rear for multiple reasons.