Pretty much this. That is what I'd describe Psylocke-Rogue relationship- They're great teammates but not necessarily as close as Betsy's towards other girls such as Ororo, Sage, Jean and Alison.
Betsy also had some great non-romance relationship with some male member of the X-Men.
I'm currently diggin' Psylocke-Cable interaction in X-Force.
Her relationship with Logan is always interesting (reminds me that both of the JGS headmasters just got told by Betsy regarding their leadership
.
She and Bishop has a complex relationship.
Loved her and Magneto interactio during Gillen's UXM
Betsy-Peter sister-lil brother relationship.
The ever flirtatious friends that is Bursty.
Betsy was Cyclops trustworthy soldier and Head of Security during the Utopian days.