Acute asthma can definitely lead to a stroke or heart attack, and using an inhaler probably would have made a difference.
The hospital is at major fault here. They kicked the old lady to the curb and called for the cops to haul her away. The cops were "just following orders". (We all know how much that defense is good for).
Cops are not qualified or generally capable of diagnosing medical problems. "Following procedures" can frequently worsen real medical problems - as we just saw in this instance.
The lady was claiming a variety of symptoms for conditions which she clearly did not have, and the hospital admins decided to get rid of her. They succeeded beyond expectations. But she did have some real medical problems and the arrest worsened them to the point where she died.
Having the old lady removed as a cost saving measure for the hospital is going to turn out as "Epic Fail".
I think what she clearly did not have was the means to pay them, and that was a deciding factor. I'd be interested to know what state her ankle was in, and whether she'd already had one stroke when they evicted her. Apparently she'd spent the whole night in the parking garage. So many hours had gone by when the hospital called the police. It seems her condition must have deteriorated still more (or was bad to begin with, but as I said, the hospital deemed her indigent and simply declined to deal with her.)