Oh no, you went in prepared and due to changed intraoperative circumstances hardly anything was performed. That must be very frustrating. I hardly can imagine not only the disappointment but also worry being left in uncertainty for now.
I guess, she did not go on operating, because being probably overwhelmed and suprised herself with the task, not prepared for it, (no specialist called in) as they did not anticipate anything else than planned, causing a longer operation (that was not planned/scheduled either, longer surgeries need to be scheduled).
Also they cannot just go on and take uterus out if your life is not in immediate danger without talking to you in the first place.
Hence had to close the surgery unsuccessfully without reading to much into it.
Did they say large mass or large mess.?
Endometriosis can infiltrate, adhere organs and produce a mess,
that is really a challange without having a seperate 'mass' growing, or did every organ in pelvis adhere into one big 'mass' without growth.
If it was a large mass (like new growth without saying what it is made of), wouldn't that have been picked up on the imaging prior operation??? (adhesions do not show up easily unless e.g. ovaries are pulled together and 'kiss' each other, indirect evidence of adhesion)
Please make really sure and ask questions as to what she referrs to 'mass/mess'.
Pictures during surgery (it was laparoscopic, right?) are often taken,
if you are used to operation pics, go for it. But make sure you have exposed yourself to 'laparsocopic pics of female pelvic' first since the normal look is already too much for some. Cysts can look very scary, even normal cysts, if one is not used to such imaging.
I fear too that they will discuss with you a hysterectomy since organs seem to stick together so badly, that they cannot see borders. But ask for a second opinion if you can.
One and the same issue is often approached differently by different surgeons, at least from the technique that can make a big difference for your healing, not so much for the removal of tissue/organs itself probably, 'work' that needed to be done.
All the best!
Write down your questions to surely please not forget anything, let them explain everything and make sure you feel comfortable with this approach. Let them explain if they saw a mess or mass and what it was made of macroscopically, since this is a difference of origin of problem and you need to know for your own sanity.
Passing urine difficulties btw directly after anaesthesia is very normal.
Often one cannot go at all for hours after operation and has a bursting full bladder. (our experience after laparoscopies, appendectomy, adhesion division. So bad that a catheter was inserted just for a one-off relief and this even nothing was done around urethra for sure), a day later it does work better, but not as before. My daughter post op was also in tears unable to go to the loo, sitting there in pain post-op unable to go and feeling to be bursting full (and she was, hours later and after 5 unsuccessful trials, finally some relief). (a catheter was not offered)
It takes days to recover to prior function (which in our case was never great anyway). If not, please mention to your doc since in your case your urethra is in the pelivis where surgery was done or 'mass/mess' seen. But don't worry about the first few days, since nearly everybody has urination problems after laparoscopy/anaesthesia on the first day(s).
You must be a great pain after operation, ablation and also the worry of knowing, there is still painmaking condition left inside, too.
Really wish the best for you! Hope you see doc soon, you cannot just be left like this now also from an emotional point of view.