First, thanks for getting to an internet connection and giving us an update.
I too was going to ask the same question as Renee - it is so very important for mares to get plenty of exercise during pregnancy, especially late pregnancy. If they are stabled at night, which hopefully they are, especially if the weather is cold/and or wet for the new foal's sake, then they should be walking around all day. I know you are at a new place and things may not yet be how you want or need them, but just get her moving as much as you possibly can. A lot of folks with 'smallish' paddocks spread small amounts of hay dotted around the space available so that the mares have to wander from pile to pile instead of standing in one spot to eat all day. Of course if you have grass then Sunny will be on the move as she grazes, but even then extra exercise will be necessary.
To Sunny herself. I can see that her tummy is growing, but still think she has a way to go yet. Nothing much seems to be moving in her udder, so perhaps she is going to be one of those mares who really gets HUGE in the tummy before she's ready to foal?? She is such a pretty mare though - she can come live with me anytime.
Take care - hope to hear from you again soon!