Discuss things with her before your surgury.
removal of the ovaries is not part of a hysterectomy (total or otherwise).
removal of the ovaries is an oophrectomy.
discuss your options of keeping the ovaries (rarely removed these days unless you are at high risk of ovarian cancer) due to the fact that they continue to produce hormones which help prevent conditions such as osteoporosis.
also ask about subtotal meaning that your cervix is not removed either.
A hyst is major surgury and there is no going back. I would advise any woman (I am not a medical professional) to at least consider other possible options before a hyst.
as you have already had an ablation which hasn't resolved your issues then a hyst maybe the answer for you.
The worst thing you can do is go in to this un-informed.
make a list of questions and book an appt with your doctor/surgeon before the procedure and make sure you get answers that you understand.
If they explain something and you don't get it - tell them - don't just nod and say OK.
Unfortunately we really only see the bad sides of hysts because people only make a noise about it when things go wrong.
the 1000's of women who have hysts every year and they go well, never say anything because they just move on with their life and forget it ever happened.
for every person who has problems post hyst 1000's do not.
find out if your hyst will be abdominal surgury or if it will be performed vaginally.
abdominal hysts require at least 12 weeks of careful recovery to set a good base for healing.