Thank you for rescuing this pretty little girl.
You are working with all the right foods -- alfalfa and Omolene 300, and can start increasing those portions steadily. The alfalfa is better for her than the coastal hay -- it gives a good protein boost, while soothing the tummy, so you can increase her from the 1 flake a day to 1 in the morning and 1 at night, so she is steadily chewing. Also, start increasing the Omolene 300. I cup was a good dose to start with, and if she's tolerating that and doing well, I'd start increasing it a cup at a time, and feeding both morning and night with it, and the alfalfa. Although I weighed my feed and measured into my "scoop", I know it worked out tie be like 8 cups + for my pregnant and lactating mommas in that last trimester, as that's the time baby is taking all the nutrition to put on weight, and it's a hard time for momma to keep enough calories to gain weight herself.
She looks to have some udder development, so I would guess you're in the last trimester, to increasing her food/calorie intake is just perfect to start now.
Can you take a couple of more pictures for us, please. Take one standing behind her, squatting right down at her lever and looking forward towards her head. That will let us see how baby is riding in there, and one full side shot, but right down at her level.
She's a pretty girl, and we're so glad you joined us here so we can watch this lucky girl!!! Thank you again for choosing her!!