Hmmm....well, it kind of seems like a lot, but maybe it's a "spurt". Weight gain can be relative though - so what is her actual weight? Do you think your scale is okay - can you weigh a can of soda to test its accuracy?
My Marcel (got him at 16 wks) gained about an oz. a week - so a pound in 2 weeks seeeeeeems like a lot, but I don't know, it could mean nothing. 11 weeks is a very vulnerable age - so if it were me, I'd take her to the vet - she'll probably need some boosters soon anyway, so you could get some other things taken care of.
Lastly, would you be interested in other foods? EUK is a pretty sub-par food - chock full of fillers and allergens....just something to consider as your pup is growing so much right now, nutritional support is key.