I went to Burgers' again today (the photo Willard posted, and one of the videos he posted are mine, taken Friday). Today they still looked good!
They both drink good. The boy a bit more than the girl. But nothing to worry about (yet?).
She has a tough job carrying them both. Most of the time when she wants to move from one spot to another, she just shuffles over the floor with her buttock (is that the correct nice way to say it?

). But she also walks, carrying both of them in one arm.
She rests a lot during the day. But of course it was a very very hot day today so that might be the reason.
I can image that they'll move to her back sooner when they get bigger. The other baby in the group (a boy named Nukta, born 25 April, so now almost 8 weeks old) already is on the back of his mom Nimba when she's walking around. That's quick. Someone who observes them daily (coincidentally since 25 April) told me that Nimba moved him to her back after one month already!
N'Gayla is a good mom, she already raised 3 kids (2 of them still living in the group), so she'll do fine I think!