Anything is possible but there's no source for the twin thing and I tend to agree with other WS-ers, that attacking twins & triplets was a sick challenge & extra excitement for her.
WS-er IAmShadow(?) made the interesting point about creating maximum drama almost like a hospital drama. ( Following on from her post, I noticed that two previously convicted nurse serial murderers were - according to trial records - likely inspired by dramatic Holby City storylines & other shows they'd recently watched)
Not having followed the case or trial from the outset IDK the timeline for twins & triplets but it might also be worth considering? that serial murderers often escalate (t is believed they escalate to achieve the 'high' they crave)
The info re LL's purported ' difficult birth' came from her staunch supporter and old friend D on Panorama.
As other WS members have noted, this claim - significantly - wasn't included in her backstory at trial.
In the same interview D also claimed that LL's owning two rescue cats was further corroboration that she didn't have the capacity to harm the vulnerable (In reality plenty of psychopaths have empathy for pets but zero mercy for their human victims)
Contrary to D's comments on how ' gentle, soft, kind' LL is, I think LL was able to completely dehumanise both babies & their parents ( especially the babies because she's seems not to have met many of the parents before attacking or killing their babies.)
We have stark evidence about how, even during routine tasks, LL was not the caring, diligent professional she claimed to be.
The mask slips. eg Child N's feed. She's so busy texting with her friend ( 41 texts) that she cannot be bothered to feed the child properly & Johnson KC says, instead of using two hands to gradually administer the feed over the 20 mins required, she just ' pushes it in.
This baby was haemophiliac.
details of the texting/feeding in this post at the 12.57 timestamp :
UK - Lucy Letby Trial - Media, Maps & Timeline *NO DISCUSSION*
If you follow the rest of the posts on the same page, you can read of the later attacks on this baby