I don't really think there is a age limit on it, so long as the person is not in the way (ie- someone very young- 2,3,4 yrs old would be a definite no). As long as the person giving birth is happy and the midwifes happy i really don't see any problems. Maybe worth asking at the birth unit. Also good to let them know you'll be having more than one birth partner.
I would ask at the hospital. Lots of 15/16 year olds have babies of their own, so as long as she's not being a nuisance then I can't see why they'd have a problem, but they might have a no children policy which would mean no under 16s or something like that.
My daughter is 19 and is going to be at the birth. The hospital and midwives were initially very reluctant about it as they were concerned about how it would affect her when the time comes for her to have babies.
"concerned how it would affect her" etc - doesn't say much about their confidence in providing a good birth experience does it? What a load of nonsense. We've lost sight of what's normal... What better way to give your daughter confidence than to see you go through this. I think it's a great idea. Hope it works out for you all.
I would ask the birth unit if they have a minimum age, but don't say how old your DSis is at that point. If you believe she will be a good support, is not squeamish at blood or injections etc and can cope well with seeing things that might be unpleasant, then you can always tell them she is 16 if that is their limit. Every person is different, and responds in different ways when faced with a situation, and you will know your DSis best. My MIL is an absolute melter at the sight of blood, sick, trauma of any kind, but managed to deliver one of her grandchildren at home unexpectedly. However I would never have had her as a birth partner in a million years, and age had nothing to do with it!
Whem i had dd 27mths ago my ds1 was at the birth, he was 11 and it was fine. The hospital.just said we needed a plan for in case of emergency or for him.not liking it but he was fine infact the midwife commented that he was more mature and coped better than.lots of dads that she sees! hehas always bern an old man in a childs body tho! Anyway it was great experience and he cut the cord and we have lovely photos of him holding dd at minutes old