Hmm seems like she is probably low on ram I know mine slows down when ram gets bellow 40mb. Buy check recently downloaded apps look to see if blur is taking up ram. Reboot worse comes to worse do a factory reset
Reboot helps a little. And for ram it says 244/477 she only has like 15 apps downloaded too what else is an option don't really want to factory reset unless we absolutely need to, and don't think ram is culprit because she has 244/477 and I have 52/477 on my x and it is not slow at all