It is possible to do blend in as short as 2 seconds. This requires the galvanic current to be set very high (and surprisingly it is not too painful over that short time...). Do You have to hold an electrode during the treatment? That's usually a clear indication of blend.
Are You sure that she does always the same hair when she goes back or if she does a different hair nearby?
The experience is unpleasant but not overly painful. It's tolerable. Some areas hurt more than others, e.g. I have some stiches on my chin since I was a kid and it always hurts more when she works on them.
As for the electrocode, I'm not holding anything, just sitting there patiently.
I can't be sure because I can't see, but sometimes I feel like she wants to pull a hair out and stops because she finds resistence so she goes back to it. It feels like she goes to the same hair to me. She says there's some hairs that are more difficult to take out, and that I can understand because some hairs are coarser and they stick out weirdly. I think it's because of the plucking I've been doing for so many years before I started treatment.
I sometimes hold an elctrode/automatic sensor for thermolysis if the electrologist doesn't want to use a pedal.
Hairs sliding out effortlessly doesn't mean much. I have had hairs sliding out perfectly in areas being treated over 2 years now, and I'm still dealing with regrowth. The only way for you to measure progress is to photo document and keep a log of treatment times.
Oh no, that's so sad, I'm sorry it's taking so long for you. I really didn't know that undertreatment can happen even with no tweezing sensation, you got me thinking now...
The truth is, depending on the time of the month, sometimes it takes a whole week for hairs to start appearing and other times they come out sooner. But I know it's not the same hairs, e.g. last time i had many dark hairs and this time they were mostly white. I'm entering my 6th month and I'd say I've had around 7 hours of treatment on my chin so far.