A woman got on my bus just now, with 4 DCs, youngest under 2 I'd say in buggy, two aged perhaps 4 and 6 who went upstairs, and oldest around 8 or 9. Woman had a bit of a barny with driver getting on because someone already in buggy space but she managed to get on and squeeze in, I was standing next to her and buggy and 8yo girl. I spoke to woman, offered to move so she could stand next to buggy, she didn't answer me, bowed her head down, looked very ill, was v pale, thin, tbh I thought drugs but am no expert. The older girl started to cry quietly saying mum, don't, you're frightening me; woman was trying to reassure her, stroking her hand, I said, it's OK, is mummy very tired, woman mumbled, I'm not well. I asked if I could help, she said no, mumbled to child about going to doctor. I was only on bus with them for about 3 stops, then I got off, was v worried about all of them, worried she was in charge of a buggy and 3 other kids, she seemed so out of it, and noticed lo in buggy had huge bruise on her forehead - tho of course toddlers get bruises all the time. Couldn't think what I could or should do. WWYD? Please someone reply!