Fellow lesbian couple doing ivf here. Your story is quite fascinating! We have had a bit of a different process.
Originally I (42) was doing IVF, we had a sperm donor who is a friend of ours. I did one full cycle (medicated IVF + ICSI). We got 8 eggs but only 3 made it to Blastocyst, 2 transferred (B + C) but the remainder wasn't good enough to freeze. We had a faint positive but then lost it.
I went on to do another cycle but was in a great deal of pain and high fever. We got 5 eggs and 3 made it to Blastocyst (3xB) 2 implanted and 1 frozen. Unfortunately I was just too sick by then. BFN and I ended up in ICU with a major infection in my ovary. Long story short after three surgeries and the removal of one ovary, both Fallopian tubes and the discovery of previously undiagnosed endometriosis I took a break and we swapped to my partner (36).
We first tried with the frostie we had from me but it unfortunately didn't stick. After that we moved on to full cycles with her. We did 3 full cycles last year but have discovered that her egg quality isn't very good. Each failed attempt really had a significant impact on my partners mental health.
In the meantime another friend of ours had had two successful pregnancies and had five frosties all from a single IVF cycle. She offered to donate them to us and we took her up on her amazingly generous offer. We also swapped back to me to allow my partner a bit more time to recover. I'm currently 10wks pregnant and all is going well so far. Couldn't be more thankful for our amazing friends!