Ladies, I need your help, tips and suggestions to nip this one in the bud before it becomes a real problem!
On Fri-Sat night DD1 (2.5) had a nasty cough in the middle of the night so DP sat with her while she tried to get back to sleep, with the end result that he slept on the camp mattress on the floor of her room. So on Sat-Sun night when she started crying that she couldn't sleep for coughing, DP was too knackered and told her over the baby phone to come on through to our bed (I was in the middle of feeding DD2 -8wks). Guess what happened at 3am this morning? In she trots... I hadn't heard any crying or coughing over the babyphone, I suspect she just thought it was a good idea by this point! (She comes into our bed in the morning at weekends and we all love that, but one of us always goes to get her, she wouldn't come through even if we told her to, until now 
). I think we just shot ourselves in the foot at the worst possible time.
DD2 is in a co-sleeping bed at the side of our bed but I pull her over into our bed for feeds. Needless to say it was a bit of a tight squeeze with four plus I'm worried about DD1 squishing or kicking the little one unintentionally/in her sleep.
Any suggestions for trying to persuade DD1 she needs to stay in her own bed even though the rest of us are tucked up in the big bed together!? It seems horribly unfair but my sleep levels can't cope with her coming in and thrashing around every night so I hope to nip this one in the bud before it becomes a repetitive problem. 
(I am aware it was probably a luxury in the first place but I live in hope! 
)
Thanks in advance!