A b2 agonist like the bronchodilator albuterol would sure help that wheezing. Note that epinephrine (such as in an epi-pen) would also achieve this but is nonselective; in this case, the patient’s symptoms would be helped most by the beta-2 component.

Epinephrine in anaphylatic shock. In this scenario she has mainly breathing problems (wheezing) so I think that for this reason B2 agonist is used.