Why was Mr. Lloyd called to Gateshead?

Mrs. Reed locked Jane in the Red Room, which provoked a horrific response. Jane was terrified.... screaming, and finally, she lost consciousness. The Lloyd, the apothecary, was called to treat her.

Turning from Bessie (though her presence was far less obnoxious to me than that of Abbot, for instance, would have been), I scrutinised the face of the gentleman: I knew him; it was Mr. Lloyd, an apothecary, sometimes called in by Mrs. Reed when the servants were ailing: for herself and the children she employed a physician.

“Well, who am I?” he asked.

I pronounced his name, offering him at the same time my hand: he took it, smiling and saying, “We shall do very well by-and-by.” Then he laid me down, and addressing Bessie, charged her to be very careful that I was not disturbed during the night. Having given some further directions, and intimates that he should call again the next day, he departed; to my grief: I felt so sheltered and befriended while he sat in the chair near my pillow; and as he closed the door after him, all the room darkened and my heart again sank: inexpressible sadness weighed it down.