Firtst experience with Colonclean from medtech.

I wanna share my first experience with colonclean as a giver to my gf. First i would like to say that the nozzle is a bit too much to handle and i couldnt put it in as the giver so my gf put it in herself and we also used a lidocaine based lubrican for more comfort .I filled the bag with one liter of saline and mixed it with 10mls of glycerine just to spice things up. After i positioned her on her left side i inflated the nozle and started the flow.My gf hasnt had a bowel movement that day so i was expecting things to move fast but they didnt , she had a few major cramps making me stop the flow and then aftrer she took the whole liter i waited .She wanted to go so i released the clamp the flow wasnt great to the waste bag , shed dint know and started to push for things to start moving , after a bit she told me she didnt had any more and only some brown water had fill the waste bag (almost 2/3 of the water i had put in) .Either way i released the nozzle and she went to the bathroom to empty the rest. Do you have any recommendations on how to make the experience better , and if i did any mistakes? Btw she was trying to cum with her vibrator but cramps didnt let her . Saline was in room temp.