I use the mustache trimmers between the pads too. But I pull all the hair down around the feet and trim that with scissors.
Since you mentioned holding Molly still, have you considered getting a grooming table with an arm to hold her in place? I used to use the dryer top and honestly thought I could live without the table . . .but then found a nice folding one on Amazon for pretty cheap and wow . . .it made all the difference in the world. No more struggles and its so much easier to blow dry and trim now . . .not to mention endless brushing sessions.