Welcome to the forum! I believe the natives are friendly.
I have heard that the Bolero are for entry level, I don't know where entry level ends and intermediate begins or where Nisa falls into this, so looking for recommendations on the make/model of skates to see her through for a while...
Things to take into consideration for your daughter's next boots are how old she is, how heavy she is and her style of skating, ie whether she is an ethereal princess who really needs a light boot in order to enjoy and progress with skating or whether she is a stronger skater, who won't bat an eyelid at a more solid but heavier boot. Also, whether she has either particularly narrow or wide feet, as some makes are better for one or the other and some makes cater for different width fittings.
First port of call is probably to ask her coach for recommendations. Pros often know of other skaters who are growing out of their boots and you can sometimes nab a bargain pair secondhand this way. Children usually outgrow their boots rather than wear them out and the secondhand market is buoyant.
As to the growth spurt, I believe that once you feed them and let them out of the cupboard, all bets are off...
Good luck!