Re: Ana Konjuh
Ana will lose substantial amount of points (100) tomorrow on the junior list, but if my calculations are correct she'll remain #1 - by less than 15 points. Both her and Siniakova were defending points this week and neither played a junior tournament (according to my knowledge) so Siniakova will land at around 1191 and Ana at 1205.
As for next week, both of them have points to defend at Bonfiglio, but neither will play again so Siniakova will lose 170 singles points and Ana 100 doubles points (doubles points are divided by 4 in juniors so that's better). Lottner, currently at #3, is trailing by some 350 points behind Siniakova so she's not a threat unless she does something spectuacular in Paris. And btw, Ana is not defending anything in Paris - Siniakova will have some small(ish) points to defend.