7 year old DD has been reliably dry in the day since turning 3. Although she is dry most nights, she doesn't wake up if she needs a wee as she is a heavy sleeper. As a result, she wets the bed - this varies between once a month, to once or twice a week (Dec and Jan was once each, but Feb has been twice a week). There don't seem to be any triggers and she usually sleeps through it although it does seem to happen when it is approaching morning.
I haven't requested any referrals as it hasn't seemed like a huge problem. I've had a read of the NICE guidelines but it refers to anything less than once or twice a week as 'very infrequent' and doesn't really give advice about this. An alarm wouldn't be appropriate for this frequency and I wouldn't do that to her anyway as she is scared of loud alarms.
Any tips? Is this common/unusual?