To be honest, charity, I wouldn't worry now.
The dangerous time for wheezy kids is before they get treatment. Once steroids have started and they are on the neb/inhaler protocol they WILL improve. And, you'll know they are improving because the oxygen readings will change.
Sats sound ok, and if feeding - well, that's brilliant.
I found it a struggle to get information about what was going on the first few times middley was admitted. They are reluctant to label kids with asthma - you get "viral induced wheeze" until there's enough of a pattern to say whether this is going to be an ongoing drama. Once diagnosed, you'll get access to an asthma nurse, with whom you'll fall slightly in love.
Why don't you tell the named nurse that you don't understand what the numbers are, what the prognosis is and you are concerned incase there's a pneumonia?
To be honest, seeing kids like yours is the bread and butter work of a medical ward. They have truckloads of them coming in and out every three days - and, when it's a new situation for a parent it's easy for the staff to forget that they don't know what's going on.
I feel for you, the first time my middley did this was the singlemost terrifying experience of my life.
Sounds like things are improving. Glad you are on the ward. Go and ask a nurse what's going on, and then get off the ward. There's probably somewhere you can have a shower, a cup of tea and have a right good cry.