Would have been nice of Easy to have provided a suitable booster seat or at least checked her seat was suitable at checkin.
I've travelled with twins under 1 year old and the biggest problem is predicting what the rules will be and what will/won't be available on the day... Do you struggle to the gate with a pair of cots and hope there is room on the floor somewhere or rely on the airline providing one that fits to a bulkhead? Will you even be able to get a seat at a bulkhead. Will the cot you requested/booked be on the plane? Given the right conditions our two slept right through a 10 hour flight.