She's 5th Council. They are cyborgs who are heavy and part machine and one of their features is that their normal movement speed is slow and their jumps are shorter because they cannot get the running speed the other three factions can get. This is the price they pay for having damage reduction from weapon fire. All 4 council members share this trait. Even Ginebra, she has to turn into a panther form in order to get around this. Otherwise even she is slow and only lightly jogs like konstantin, Kuzman and now, Valeria. I know Valeria LOOKS skinny and light and like she could run really fast or jump as far as the Umbral Wardogs, but she is still a cyborg and is probably heavy due to all her synthetic parts. So she can't jump any further than the other council members.
EDIT: As far as jumps on Low Blow, the same jumping issues occurs with Kuzman, Konstantin and normal form Ginebra. It's best to allow other characters to get the switches as the 5th Council have more of a risk of missing jumps. The last phase, however, does have a jump that has to be made. Most Council players attempt the jump and if they fail they re-spawn across the gap.
I hope this helps out.