can you get her checked by the vet? I am sure it is not the case but I had a mare this year that did that and her milk even progressed on the milk strips and then one day her udder went down and he tummy too
Joking aside as Anna said the udders go down whilst they are walking around during the day and then swell at night whilst they are stabled, once they come in from the field with a full udder you know you are getting very close. I get confused with the time difference sometimes as I forget that your morning is our night. What time did you take these pics today? Morning or evening?
I dont think her bag is full enough for that to be proper wax (difficult to see from the pics, sorry) but as they get closer to foaling, mares to secrete little drops of milk which then dry on their teats forming little crusty bits. She's getting closer!!
Just keep watching for her to walk in at night with a full tight bag and you/she will be good to go!!
You mentioned that she also had a soft bag in the morning (when we have been telling you that her bag should be bigger/more full in the morning. If she is anything like our super Suzie and gets a little impatient anticipating her breakfast, the 'exercise' she is taking walking round her stable could be reducing her bag from its night time 'increase' (just like walking around outside would do), so I'm sorry if we are confusing you by saying that you should see a 'filled' bag in the morning, whereas you are seeing a soft bag!
So the next pic we need is a sideways one so that we can view that lovely V that must be almost in place by now!
If it had the mare would still have to expel the body, she's far enough along that she won't be able to reabsorb. She would also be acting wrong so I suspect if somthing that drastic had happened you'd be seeing a lot of bad signs.
If you are worried go ahead and get the vet out. It's a small price to pay for peace of mind.