Vet techs-hamster experts-euthanasia question,please help?

i have an elderly female hamster.she looked just not right yesterday around midnite.when i woke up,she was sleeping in a large amount of blood from her back end,and looked very bad.i have seen elderly hamsters dying b4,and she looked like she would p soon.i talked with my mom and my husband and we all thought it best to let her peacefully sleep the last few hours/day,rather than take her in the car,to the vet,have her poked and prodded and then put down,most likely.i always have my pets put to sleep when the time comes,but i recently read hamsters are not given a needle,but put in a box and suffocated with a gas.this may be necessary sometimes,but she shows no sign of pain-no writhing or squeaking,just sleeping calmly.i thought it would be better for her to drift off and die in her sleep than to be suffocated,which seems stressful and horrific to me and my family.my husband and i had to work today,i expected her to p when we were gone,but she moved a little,then went back to sleep when i checked on her just now.should we take her to an emergency clinic if she is still here 2morro,should i give her pedialyte to make her more comfortable,or just leave her alone?was i cruel to try to let her p on her own,should i have taken her to the vet b4 to be put to sleep?right now,she is sleeping in her aquarium in the quiet spare bedroom where i keep her,out of the way of cats/dogs/family,so she is in a calm and quiet environment.rodent experts,hamster fans,vets or vet techs-if this was ur hamster,what would u do? i dont think this is something she will recover from,she is very old and i expected in the next few months,something might happen-she is at the end of the average hamster lifespan.please advise me,thanx to all!(sorry so long,but i had to explain)