raising the hands

Women's Salaah

Q:

1. How women must lift her hands during the first takbeer – close to the middle section of her bosom or close to the area near armpits where bosom part starts? Takbeer must be said after hands are up, not during lifting them up, is it correct?

2. When we say takbeer in salaah (women salah) we immediately go to next posture and we finish saying takbeer only after reaching it. How to deal with mistakes that happen sometimes with this, when we are too fast either to say takbeer or to reach the posture or we are just the opposite, to slow? Do we have to repeat salaah or make sajda-sawh or ignore this? I have some salahs where I made such mistakes, what to do about those salahs, repeat them or not?