only for look to Julia you cant say the body type that she will get it, I dont see nothing to think she will be like the Sasha´s body type, if we would see to her parents and sibilings is different, its a better guide. Mirai and Caroline looked more petite and skinny than Julia at 14 yr old. I dont say that is impossible not lose the jumps but there are big probailities that growth spurt affect in a negative way her carer.
This is true and there is a lot to be said for your body growing to whatever size it is meant to be. Mirai and Caroline are not the only examples of girls who are very short and skinny minnie as young teenagers that grow to be rather normal/average sized, in terms of both height and weight (at least by athlete standards) by the time they are in their late teens. I was the same way. Sometimes girls at that age remain tiny but others will grow a lot, and some do their bulk of their growing all at once (e.g. Mirai, who grew hugely from 2007-2009 but has not changed that much since) while others have a few major spurts (like Caroline, who shot up in height one season, then filled out a lot the next, and Kanako, who has grown and filled out in smaller spurts over the past couple seasons) and still others are lucky and go through puberty gradually without experiencing really noticeable or major changes all at once (like Mao or Yuna).
It's funny, the podium at the JGP Bosphorous from 2010, Kiri, Christina, and Sofia are all about the same size/height
http://stat001.ameba.jp/user_images/20091020/17/arcatoa/f2/0c/j/o0465046310281810960.jpg, and now 2 years later they look so different, Gao towers over the other two and while still willowy is much more muscular compared to then, while Kiri is petite and appears to have not gotten much taller since but is now more compact and muscular in build, and then Sofia is similarly petite but very slight in her build, maybe even looks thinner now compared to then. Looking at Julia there is a good possibility she will remain very petite, but it might not happen, and if she does grow a lot more, we don't know when it will happen, how it will effect her, and whether it will be a short, aggressive stage where she's really out of it then bounces back, if it will be a long-term gradual adjustment process, or if she will get through it with little difficulties at all.
Julia might be okay because physically, to me at least, she does look her age, whereas someone like Mirai, Caroline, Christina Gao, etc. at 13 and 14 did not look their age but much younger, maybe 10 or 12. So sometimes looking very young and being very small at that age speaks to someone not having hit puberty yet rather than being just a naturally small person, and oftentimes it it these girls that end up growing to be bigger people as adults (bigger people being relative, in my experience, most of these girls that grow late usually end up pretty average height, maybe 5'4" to 5'6", but this seems taller due to their being so tiny as young teens), they just undergo the changes at an older age. Julia has grown height wise but also has become studier in her build these past few seasons, and while she certainly doesn't have a womanly figure yet, she doesn't look like a 10 or 12 year old to me, meaning she might luck out and undergo puberty changes gradually, which may help her skating career. Yuna was the same way, she definitely looked different at 20 compared to 14, and while the height and weight she added between those years was likely a lot less than some others or is usual, she definitely did grow and mature during that time, its more you can't pinpoint to a certain year or season and say that was when she grew or filled out, it was more gradual and thus she was able to keep her skills.