I personally don't think there is anything wrong with taking them out when they are ill as they clearly do just have a cold and nothing serious, I'm a big believer in getting fresh air and taking your mind off being ill, would I take them to a farm and let them feed animals when they are fighting something no.
I just think its more a sign that she is full of tit and has spent the past few days trying to make out the girls are really very poorly to the point where she needed to call an ambulance and has been milking going getting them 'emergency medicine' all week. Either she genuinely thought one was very poorly and then feels stupid for calling and ambulance so is keeping up the facade that they are very poorly so she doesnt look stupid or she its just one of her latest stunts as she must have been feeling a lack of attention, either way she's bleeping twisted.