kristina - I think you should not push it that far up. If your original voise is at 100 Hz, better aim for something in the 180 Hz range, it will sound more natural than to go way above 200 Hz. Also I think at that range it would be easier to concentrate on resonance more
Sears - i think it sounds feminine, but its super breathy. You need to gasp for air every few words. Maybe add a bit more "squeeze" to the voice. Although breathy is not that bad, its better than squeezing too much.
Delsorou - that was all one breath? You must have gigantic lungs - but then maybe it can be true, since you are squeezing a lot and that makes the voice go longer with the same breath, but it also has a bit of a harsh sound to it. I think it sounds female, but it has that twangy sound to it. I think if your voice and Sears' voice would mix, it would be perfect
- more breathyness for you and more twang for her
- I did similar things and using too much squeezing/twang can be harsh on the vocal chords