First time breeding so it's hard to tell if the signs I see are actually right or if I'm just totally off.

This female started breeding in October and came back on feed at that time to start eating aggressively. From then until going off feed she jumped from 1300 to 1800 grams. She started glowing in November and December after what was her last shed in December. She went off feed like someone flipped a switch in her around the beginning of March. I saw some swelling that looked like an ovy around this time - still glowing intensely. She was sitting on the cool side through all of this. Now she is sitting on the heat for the first time in a while and has a swell starting about 1/3 of the way up from her tail. Her spine is somewhat raised and creates an angle but her belly is SWOLLEN and HARD. Along with noticing her going to the heat recently, she started sitting in a coil with her tail in the middle and her body kind of rotated on its side. I haven't seen any of my snakes sit like this before. She isn't really glowing at this point. When I try to handle her she is very aggressive / flighty.

I guess my questions are these: Does this sound like she has ovulated and is approaching her pre-lay shed? Do they skip the pre-lay shed sometimes? Should I pair her at this point when shes sitting in a coil or leave the male out of there?

And now you are rewarded with pics:


Kind of hard to tell but there is a distinct swelling starting 1/3 of the way up